From f9df728500dd281b6651b22fd62ef6586b58453a Mon Sep 17 00:00:00 2001 From: Jim Jones Date: Mon, 27 Oct 2025 13:19:14 +0100 Subject: [PATCH v12] Add XMLCast function (SQL/XML X025) This patch introduces support for the XMLCAST function, as specified in SQL/XML:2023 (ISO/IEC 9075-14:2023), Subclause 6.7 "". It enables standards-compliant conversion between SQL data types and XML, following the lexical rules defined by the W3C XML Schema Part 2. XMLCast provides an alternative to CAST when converting SQL values into XML content, ensuring the output uses canonical XML Schema lexical representations. For example, timestamp and interval values are rendered as `xs:dateTime` and `xs:duration` (e.g., "2024-01-01T12:00:00Z" or "P1Y2M"), conforming to ISO 8601 formats. Conversely, XMLCast also allows converting XML content back into SQL types (e.g., boolean, numeric, date/time), validating the input string according to XML Schema lexical forms. Supported casts include: - SQL -> XML: boolean, numeric, character, date/time, interval - XML -> SQL: the inverse of the above, with lexical validation The BY REF and BY VALUE clauses are accepted for SQL/XML compatibility, but ignored. Documentation and regression tests are included. --- doc/src/sgml/datatype.sgml | 87 +++- src/backend/catalog/sql_features.txt | 2 +- src/backend/executor/execExprInterp.c | 123 +++++- src/backend/nodes/nodeFuncs.c | 13 + src/backend/parser/gram.y | 22 +- src/backend/parser/parse_expr.c | 108 +++++ src/backend/parser/parse_target.c | 7 + src/backend/utils/adt/ruleutils.c | 10 +- src/backend/utils/adt/xml.c | 61 +++ src/include/nodes/parsenodes.h | 8 + src/include/nodes/primnodes.h | 3 + src/include/parser/kwlist.h | 1 + src/include/utils/xml.h | 1 + src/test/regress/expected/xml.out | 565 +++++++++++++++++++++++++ src/test/regress/expected/xml_1.out | 429 +++++++++++++++++++ src/test/regress/expected/xml_2.out | 567 ++++++++++++++++++++++++++ src/test/regress/sql/xml.sql | 278 +++++++++++++ src/tools/pgindent/typedefs.list | 1 + 18 files changed, 2276 insertions(+), 10 deletions(-) diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml index b81d89e260..bff8082160 100644 --- a/doc/src/sgml/datatype.sgml +++ b/doc/src/sgml/datatype.sgml @@ -4494,14 +4494,93 @@ XMLPARSE ( { DOCUMENT | CONTENT } value) XMLPARSE (DOCUMENT 'Manual...') XMLPARSE (CONTENT 'abcbarfoo') ]]> - While this is the only way to convert character strings into XML - values according to the SQL standard, the PostgreSQL-specific - syntaxes: + + Another option for converting values to or from xml is the xmlcast function, + which is designed to cast SQL data types into xml, and vice versa, in a standards-compliant way. + +XMLCAST ( expression AS type [ BY REF | BY VALUE ] ) + + Similar to the SQL function CAST, this function converts an expression + into the specified type. It is primarily used for converting between SQL values + and xml values in a standards-compliant way. + + Unlike CAST, which may coerce SQL values into text or XML without enforcing a specific + lexical representation, xmlcast ensures that the conversion produces or expects a + canonical XML Schema lexical form appropriate for the target type. For example, an interval + value is rendered as P1Y2M (xs:duration), and a timestamp as + 2023-05-19T14:30:00Z (xs:dateTime). Similarly, when converting from XML to SQL types, + xmlcast validates that the input string conforms to the lexical format required by the + corresponding SQL type. + + The function xmlcast follows these rules: + + + + + Either expression or type must be of type xml. + + + + + It supports casting between xml and character, numeric, date/time, and boolean data types. + + + + + Similar to the function xmltext, expression + values containing XML predefined entities will be escaped (see examples below). + + + + + Values of type date, time with time zone, timestamp with time zone, + and interval are converted to their corresponding XML Schema types: xs:date, + xs:time, xs:dateTime, and xs:duration, respectively. + + + + + The BY REF and BY VALUE clauses + are accepted but ignored, as discussed in + . + + + + + Examples: +'::text AS xml); + xmlcast +--------------------- + <foo&bar> + +SELECT xmlcast('<foo&bar>'::xml AS text); + xmlcast +----------- + + +SELECT xmlcast(CURRENT_TIMESTAMP AS xml); + xmlcast +--------------------------------- + 2024-06-02T00:29:40.92397+02:00 + +SELECT xmlcast('P1Y2M3W4DT5H6M7S'::xml AS interval); + xmlcast +-------------------------------- + 1 year 2 mons 25 days 05:06:07 + +SELECT xmlcast('1 year 2 months 3 weeks 4 days 5 hours 6 minutes 7 seconds'::interval AS xml); + xmlcast +----------------- + P1Y2M25DT5H6M7S +]]> + + Alternatively, it is also possible to convert character strings into XML using PostgreSQL-specific cast syntaxes: bar' 'bar'::xml ]]> - can also be used. + diff --git a/src/backend/catalog/sql_features.txt b/src/backend/catalog/sql_features.txt index 3a8ad20160..412e1a4e37 100644 --- a/src/backend/catalog/sql_features.txt +++ b/src/backend/catalog/sql_features.txt @@ -624,7 +624,7 @@ X014 Attributes of XML type YES X015 Fields of XML type NO X016 Persistent XML values YES X020 XMLConcat YES -X025 XMLCast NO +X025 XMLCast YES X030 XMLDocument NO X031 XMLElement YES X032 XMLForest YES diff --git a/src/backend/executor/execExprInterp.c b/src/backend/executor/execExprInterp.c index 0e1a74976f..246abaf544 100644 --- a/src/backend/executor/execExprInterp.c +++ b/src/backend/executor/execExprInterp.c @@ -69,6 +69,7 @@ #include "utils/array.h" #include "utils/builtins.h" #include "utils/date.h" +#include "utils/datetime.h" #include "utils/datum.h" #include "utils/expandedrecord.h" #include "utils/json.h" @@ -4643,11 +4644,127 @@ ExecEvalXmlExpr(ExprState *state, ExprEvalStep *op) *op->resnull = false; } break; + case IS_XMLCAST: + { + Datum *argvalue = op->d.xmlexpr.argvalue; + bool *argnull = op->d.xmlexpr.argnull; + char *str; - default: - elog(ERROR, "unrecognized XML operation"); + Assert(list_length(xexpr->args) == 1); + + if (argnull[0]) + return; + + value = argvalue[0]; + + switch (xexpr->targetType) + { + case XMLOID: + /* + * SQL date/time types must be mapped to XML Schema types when casting to XML: + * - DATE -> xs:date + * - TIME [WITH/WITHOUT TZ] -> xs:time + * - TIMESTAMP [WITH/WITHOUT TZ] -> xs:dateTime + * + * These mappings are defined in SQL/XML:2023 (ISO/IEC 9075-14:2023), + * Subclause 6.7 "", item 15.e.i–v. + * + * The corresponding XML Schema lexical formats (e.g., "2023-05-19", "14:30:00Z", + * "2023-05-19T14:30:00+01:00") follow ISO 8601 and are specified in + * W3C XML Schema Part 2: Primitive Datatypes §3.2.7 (dateTime) and §3.2.9 (date). + */ + if (xexpr->type == TIMESTAMPOID || xexpr->type == TIMESTAMPTZOID || + xexpr->type == DATEOID || xexpr->type == BYTEAOID || xexpr->type == BOOLOID) + { + text *mapped_value = cstring_to_text( + map_sql_value_to_xml_value(value, xexpr->type, false)); + *op->resvalue = PointerGetDatum(mapped_value); + } + /* + * SQL interval types must be mapped to XML Schema types when casting to XML: + * - Year-month intervals → xs:yearMonthDuration + * - Day-time intervals → xs:dayTimeDuration + * + * This behavior is required by SQL/XML:2023 (ISO/IEC 9075-14:2023), + * Subclause 6.7 "", General Rules, item 3.d.ii.1–2. + * + * These XML Schema types require ISO 8601-compatible lexical representations, + * such as: "P1Y2M", "P3DT4H5M", or "P1Y2M3DT4H5M6S", as defined in + * W3C XML Schema Part 2: Primitve Datatypes, §3.2.6 (duration) + */ + else if (xexpr->type == INTERVALOID) + { + Interval *in = DatumGetIntervalP(value); + + struct pg_itm tt, *itm = &tt; + char buf[MAXDATELEN + 1]; + + if (INTERVAL_NOT_FINITE(in)) + { + if (INTERVAL_IS_NOBEGIN(in)) + strcpy(buf, EARLY); + else if (INTERVAL_IS_NOEND(in)) + strcpy(buf, LATE); + else + elog(ERROR, "invalid interval argument"); + } + else + { + interval2itm(*in, itm); + EncodeInterval(itm, INTSTYLE_ISO_8601, buf); + } + + *op->resvalue = PointerGetDatum(cstring_to_text(buf)); + } + /* no need to escape the result, as the origin is also an XML */ + else if (xexpr->type == XMLOID) + *op->resvalue = PointerGetDatum(DatumGetXmlP(value)); + /* we make sure that potential predifined entitties are escaped */ + else + *op->resvalue = PointerGetDatum( + DatumGetXmlP((DirectFunctionCall1(xmltext, value)))); + break; + case TEXTOID: + case VARCHAROID: + case NAMEOID: + case BPCHAROID: + /* + * when casting from XML to a character string we make sure that + * all escaped xml characters are unescaped. + */ + str = text_to_cstring(DatumGetTextPP(value)); + *op->resvalue = PointerGetDatum( + cstring_to_text(unescape_xml(str))); + + pfree(str); + break; + case INT2OID: + case INT4OID: + case INT8OID: + case NUMERICOID: + case FLOAT4OID: + case FLOAT8OID: + case BOOLOID: + case TIMESTAMPOID: + case TIMESTAMPTZOID: + case TIMEOID: + case TIMETZOID: + case DATEOID: + case BYTEAOID: + case INTERVALOID: + *op->resvalue = PointerGetDatum(DatumGetTextP(value)); + break; + default: + elog(ERROR, "unsupported target data type for XMLCast"); + } + + *op->resnull = false; + } break; - } + default: + elog(ERROR, "unrecognized XML operation"); + break; + } } /* diff --git a/src/backend/nodes/nodeFuncs.c b/src/backend/nodes/nodeFuncs.c index ede838cd40..8994bdda8e 100644 --- a/src/backend/nodes/nodeFuncs.c +++ b/src/backend/nodes/nodeFuncs.c @@ -1732,6 +1732,9 @@ exprLocation(const Node *expr) case T_FunctionParameter: loc = ((const FunctionParameter *) expr)->location; break; + case T_XmlCast: + loc = ((const XmlCast *) expr)->location; + break; case T_XmlSerialize: /* XMLSERIALIZE keyword should always be the first thing */ loc = ((const XmlSerialize *) expr)->location; @@ -4464,6 +4467,16 @@ raw_expression_tree_walker_impl(Node *node, return true; } break; + case T_XmlCast: + { + XmlCast *xc = (XmlCast *) node; + + if (WALK(xc->expr)) + return true; + if (WALK(xc->targetType)) + return true; + } + break; case T_CollateClause: return WALK(((CollateClause *) node)->arg); case T_SortBy: diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y index a4b29c822e..8a599f9641 100644 --- a/src/backend/parser/gram.y +++ b/src/backend/parser/gram.y @@ -794,7 +794,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query); WHEN WHERE WHITESPACE_P WINDOW WITH WITHIN WITHOUT WORK WRAPPER WRITE - XML_P XMLATTRIBUTES XMLCONCAT XMLELEMENT XMLEXISTS XMLFOREST XMLNAMESPACES + XML_P XMLATTRIBUTES XMLCAST XMLCONCAT XMLELEMENT XMLEXISTS XMLFOREST XMLNAMESPACES XMLPARSE XMLPI XMLROOT XMLSERIALIZE XMLTABLE YEAR_P YES_P @@ -16144,6 +16144,24 @@ func_expr_common_subexpr: v->location = @1; $$ = (Node *) v; } + | XMLCAST '(' a_expr AS Typename ')' + { + XmlCast *n = makeNode(XmlCast); + + n->expr = $3; + n->targetType = $5; + n->location = @1; + $$ = (Node *) n; + } + | XMLCAST '(' a_expr AS Typename xml_passing_mech')' + { + XmlCast *n = makeNode(XmlCast); + + n->expr = $3; + n->targetType = $5; + n->location = @1; + $$ = (Node *) n; + } | XMLCONCAT '(' expr_list ')' { $$ = makeXmlExpr(IS_XMLCONCAT, NULL, NIL, $3, @1); @@ -18195,6 +18213,7 @@ col_name_keyword: | VALUES | VARCHAR | XMLATTRIBUTES + | XMLCAST | XMLCONCAT | XMLELEMENT | XMLEXISTS @@ -18783,6 +18802,7 @@ bare_label_keyword: | WRITE | XML_P | XMLATTRIBUTES + | XMLCAST | XMLCONCAT | XMLELEMENT | XMLEXISTS diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c index 12119f147f..34a2925e0e 100644 --- a/src/backend/parser/parse_expr.c +++ b/src/backend/parser/parse_expr.c @@ -40,6 +40,37 @@ #include "utils/timestamp.h" #include "utils/xml.h" +/* + * Determines whether a type category is allowed in XMLCAST conversions, + * either as a source (SQL -> XML) or target (XML -> SQL) type. + * + * Based on SQL/XML:2023 (ISO/IEC 9075-14:2023), + * Subclause 6.7 "", General Rules, item 3.d.ii: + * + * - Items 1–2 explicitly describe interval mappings: + * 1) Year-month intervals -> xs:yearMonthDuration + * 2) Day-time intervals -> xs:dayTimeDuration + * + * - Items 3–4 describe the general case: + * 3) If the target XML type is an XML Schema built-in data type, + * or + * 4) If it is derived from a built-in atomic type, + * then that type (or its base type) governs the conversion. + * + * These built-in and atomic types are defined in "W3C XML Schema Part 2: + * Datatypes", and include types such as xs:boolean, xs:decimal, xs:date, + * xs:dateTime, and xs:string. While SQL/XML does not enumerate mappings + * for all these types, it relies on their existence and semantics to + * support conversions. + * + * As such, PostgreSQL allows casting to and from types in the following + * categories: numeric, string, datetime, boolean, and timespan. + */ +#define type_is_xmlcast_supported(x) ((x) == TYPCATEGORY_NUMERIC \ + || (x) == TYPCATEGORY_STRING || (x) == TYPCATEGORY_DATETIME \ + || (x) == TYPCATEGORY_BOOLEAN || (x) == TYPCATEGORY_UNKNOWN \ + || (x) == TYPCATEGORY_TIMESPAN) + /* GUC parameters */ bool Transform_null_equals = false; @@ -67,6 +98,7 @@ static Node *transformMinMaxExpr(ParseState *pstate, MinMaxExpr *m); static Node *transformSQLValueFunction(ParseState *pstate, SQLValueFunction *svf); static Node *transformXmlExpr(ParseState *pstate, XmlExpr *x); +static Node *transformXmlCast(ParseState *pstate, XmlCast *xc); static Node *transformXmlSerialize(ParseState *pstate, XmlSerialize *xs); static Node *transformBooleanTest(ParseState *pstate, BooleanTest *b); static Node *transformCurrentOfExpr(ParseState *pstate, CurrentOfExpr *cexpr); @@ -275,6 +307,10 @@ transformExprRecurse(ParseState *pstate, Node *expr) (SQLValueFunction *) expr); break; + case T_XmlCast: + result = transformXmlCast(pstate, (XmlCast *) expr); + break; + case T_XmlExpr: result = transformXmlExpr(pstate, (XmlExpr *) expr); break; @@ -2467,6 +2503,10 @@ transformXmlExpr(ParseState *pstate, XmlExpr *x) newe = coerce_to_specific_type(pstate, newe, INT4OID, "XMLROOT"); break; + case IS_XMLCAST: + /* not handled here */ + Assert(false); + break; case IS_XMLSERIALIZE: /* not handled here */ Assert(false); @@ -2483,6 +2523,74 @@ transformXmlExpr(ParseState *pstate, XmlExpr *x) return (Node *) newx; } +static Node * +transformXmlCast(ParseState *pstate, XmlCast *xc) +{ + Node *result; + XmlExpr *xexpr; + int32 targetTypmod; + Oid targetType; + Oid inputType; + char inputTypcategory; + char targetTypcategory; + bool inputTypispreferred; + bool targetTypispreferred; + + inputType = exprType(transformExprRecurse(pstate, xc->expr)); + get_type_category_preferred(inputType, &inputTypcategory, &inputTypispreferred); + + typenameTypeIdAndMod(pstate, xc->targetType, &targetType, &targetTypmod); + get_type_category_preferred(targetType, &targetTypcategory, &targetTypispreferred); + + /* + * Ensure that either the cast operand or the data type is an XML, + * and check if the data types are supported. + */ + if ((inputType != XMLOID && targetType != XMLOID) || + (!type_is_xmlcast_supported(inputTypcategory) && inputType != XMLOID && inputType != BYTEAOID) || + (!type_is_xmlcast_supported(targetTypcategory) && targetType != XMLOID && targetType != BYTEAOID)) + ereport(ERROR, + (errcode(ERRCODE_CANNOT_COERCE), + errmsg("cannot cast from '%s' to '%s'", + format_type_be(inputType), format_type_be(targetType)), + parser_errposition(pstate, xc->location))); + + /* + * It is not possible to cast some supported data types directly to XML, + * so we first handle them as text and later on return them as XML. + */ + if (inputTypcategory == TYPCATEGORY_NUMERIC || inputType == TIMEOID || + inputType == TIMETZOID || inputType == UNKNOWNOID || inputType == NAMEOID) + inputType = TEXTOID; + + xexpr = makeNode(XmlExpr); + xexpr->op = IS_XMLCAST; + xexpr->location = xc->location; + xexpr->type = inputType; + xexpr->targetType = targetType; + xexpr->name = "xmlcast"; + xexpr->args = list_make1(coerce_to_specific_type(pstate, + transformExprRecurse(pstate, xc->expr), + inputType, + "XMLCAST")); + + result = coerce_to_target_type(pstate, (Node *) xexpr, + targetType == TEXTOID ? XMLOID : TEXTOID, + targetType, targetTypmod, + COERCION_EXPLICIT, + COERCE_EXPLICIT_CAST, + -1); + + if (result == NULL) + ereport(ERROR, + (errcode(ERRCODE_CANNOT_COERCE), + errmsg("cannot cast XMLCAST result to %s", + format_type_be(targetType)), + parser_errposition(pstate, xexpr->location))); + + return result; +} + static Node * transformXmlSerialize(ParseState *pstate, XmlSerialize *xs) { diff --git a/src/backend/parser/parse_target.c b/src/backend/parser/parse_target.c index 905c975d83..4b2fee64cb 100644 --- a/src/backend/parser/parse_target.c +++ b/src/backend/parser/parse_target.c @@ -1955,6 +1955,9 @@ FigureColnameInternal(Node *node, char **name) /* make SQL/XML functions act like a regular function */ switch (((XmlExpr *) node)->op) { + case IS_XMLCAST: + *name = "xmlcast"; + return 2; case IS_XMLCONCAT: *name = "xmlconcat"; return 2; @@ -1981,6 +1984,10 @@ FigureColnameInternal(Node *node, char **name) break; } break; + case T_XmlCast: + /* make XMLCAST act like a regular function */ + *name = "xmlcast"; + return 2; case T_XmlSerialize: /* make XMLSERIALIZE act like a regular function */ *name = "xmlserialize"; diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c index 79ec136231..c708be1ebd 100644 --- a/src/backend/utils/adt/ruleutils.c +++ b/src/backend/utils/adt/ruleutils.c @@ -10115,6 +10115,9 @@ get_rule_expr(Node *node, deparse_context *context, case IS_XMLSERIALIZE: appendStringInfoString(buf, "XMLSERIALIZE("); break; + case IS_XMLCAST: + appendStringInfoString(buf, "XMLCAST("); + break; case IS_DOCUMENT: break; } @@ -10125,7 +10128,7 @@ get_rule_expr(Node *node, deparse_context *context, else appendStringInfoString(buf, "CONTENT "); } - if (xexpr->name) + if (xexpr->name && xexpr->op != IS_XMLCAST) { appendStringInfo(buf, "NAME %s", quote_identifier(map_xml_name_to_sql_identifier(xexpr->name))); @@ -10161,6 +10164,7 @@ get_rule_expr(Node *node, deparse_context *context, appendStringInfoString(buf, ", "); switch (xexpr->op) { + case IS_XMLCAST: case IS_XMLCONCAT: case IS_XMLELEMENT: case IS_XMLFOREST: @@ -10238,6 +10242,10 @@ get_rule_expr(Node *node, deparse_context *context, appendStringInfoString(buf, " NO INDENT"); } + if (xexpr->op == IS_XMLCAST) + appendStringInfo(buf, " AS %s", + format_type_be(xexpr->targetType)); + if (xexpr->op == IS_DOCUMENT) appendStringInfoString(buf, " IS DOCUMENT"); else diff --git a/src/backend/utils/adt/xml.c b/src/backend/utils/adt/xml.c index 66b4418369..918f88397d 100644 --- a/src/backend/utils/adt/xml.c +++ b/src/backend/utils/adt/xml.c @@ -2762,6 +2762,67 @@ escape_xml(const char *str) return buf.data; } +/* + * Unescape XML escaped characters. + * + * In order to keep it consistent with "escape_xml(const char*)", + * this function intentionally does not depend on libxml2. + */ +char * +unescape_xml(const char *str) +{ + StringInfoData buf; + size_t p = 0; + size_t len; + + if (!str) + return NULL; + + len = strlen(str); + + initStringInfo(&buf); + + while (p < len) + { + if (p + 4 <= len && strncmp(str + p, "<", 4) == 0) + { + appendStringInfoChar(&buf, '<'); + p += 4; + } + else if (p + 4 <= len && strncmp(str + p, ">", 4) == 0) + { + appendStringInfoChar(&buf, '>'); + p += 4; + } + else if (p + 5 <= len && strncmp(str + p, "&", 5) == 0) + { + appendStringInfoChar(&buf, '&'); + p += 5; + } + else if (p + 5 <= len && strncmp(str + p, " ", 5) == 0) + { + appendStringInfoChar(&buf, '\r'); + p += 5; + } + else if (p + 6 <= len && strncmp(str + p, """, 6) == 0) + { + appendStringInfoChar(&buf, '"'); + p += 6; + } + else if (p + 6 <= len && strncmp(str + p, " ", 6) == 0) + { + appendStringInfoChar(&buf, '\r'); + p += 6; + } + else + { + appendStringInfoChar(&buf, *(str + p)); + p++; + } + } + + return buf.data; +} static char * _SPI_strdup(const char *s) diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index ecbddd12e1..4da08cd152 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -877,6 +877,14 @@ typedef struct XmlSerialize ParseLoc location; /* token location, or -1 if unknown */ } XmlSerialize; +typedef struct XmlCast +{ + NodeTag type; + Node *expr; + TypeName *targetType; + ParseLoc location; /* token location, or -1 if unknown */ +} XmlCast; + /* Partitioning related definitions */ /* diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index 1b4436f2ff..77c1be8ff0 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -1602,6 +1602,7 @@ typedef struct SQLValueFunction */ typedef enum XmlExprOp { + IS_XMLCAST, /* XMLCAST(op AS datatype) */ IS_XMLCONCAT, /* XMLCONCAT(args) */ IS_XMLELEMENT, /* XMLELEMENT(name, xml_attributes, args) */ IS_XMLFOREST, /* XMLFOREST(xml_attributes) */ @@ -1638,6 +1639,8 @@ typedef struct XmlExpr /* target type/typmod for XMLSERIALIZE */ Oid type pg_node_attr(query_jumble_ignore); int32 typmod pg_node_attr(query_jumble_ignore); + /* option for XMLCAST */ + Oid targetType; /* token location, or -1 if unknown */ ParseLoc location; } XmlExpr; diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h index 84182eaaae..25306eddf0 100644 --- a/src/include/parser/kwlist.h +++ b/src/include/parser/kwlist.h @@ -508,6 +508,7 @@ PG_KEYWORD("wrapper", WRAPPER, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("write", WRITE, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("xml", XML_P, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("xmlattributes", XMLATTRIBUTES, COL_NAME_KEYWORD, BARE_LABEL) +PG_KEYWORD("xmlcast", XMLCAST, COL_NAME_KEYWORD, BARE_LABEL) PG_KEYWORD("xmlconcat", XMLCONCAT, COL_NAME_KEYWORD, BARE_LABEL) PG_KEYWORD("xmlelement", XMLELEMENT, COL_NAME_KEYWORD, BARE_LABEL) PG_KEYWORD("xmlexists", XMLEXISTS, COL_NAME_KEYWORD, BARE_LABEL) diff --git a/src/include/utils/xml.h b/src/include/utils/xml.h index 0d7a816b9f..60bb464bd3 100644 --- a/src/include/utils/xml.h +++ b/src/include/utils/xml.h @@ -80,6 +80,7 @@ extern bool xml_is_document(xmltype *arg); extern text *xmltotext_with_options(xmltype *data, XmlOptionType xmloption_arg, bool indent); extern char *escape_xml(const char *str); +extern char *unescape_xml(const char *str); extern char *map_sql_identifier_to_xml_name(const char *ident, bool fully_escaped, bool escape_period); extern char *map_xml_name_to_sql_identifier(const char *name); diff --git a/src/test/regress/expected/xml.out b/src/test/regress/expected/xml.out index 103a22a3b1..a425109f71 100644 --- a/src/test/regress/expected/xml.out +++ b/src/test/regress/expected/xml.out @@ -1881,3 +1881,568 @@ SELECT xmltext('x'|| '

73

'::xml || .42 || true || 'j'::char); x<P>73</P>0.42truej (1 row) +-- for xmlcast() tests +INSERT INTO xmltest + VALUES (42, +' + + P1Y2M3DT4H5M6S + 1 year 2 mons 3 days 4 hours 5 minutes 6 seconds + 2002-09-24 + 2002-09-24+06:00 + + 09:30:10Z + 09:30:10-06:00 + 09:30:10+06:00 + 2002-05-30T09:00:00 + 2002-05-30T09:30:10.5 + 2002-05-30T09:30:10Z + 2002-05-30T09:30:10-06:00 + 2002-05-30T09:30:10+06:00 + foo bar + foo bar + foo & <"bar"> + 42.7312345678910 + +42.7312345678910 + -42.7312345678910 + 42 + +42 + -42 + 4273535420162021 + +4273535420162021 + -4273535420162021 + 42 + 73 + + '::xml +); +-- This prevents the xmlcast regression tests from failing if the system's timezone has been changed. +SET timezone TO 'America/Los_Angeles'; +-- xmlcast exceptions +\set VERBOSITY terse +SELECT xmlcast((xpath('//text1/text()', data))[1] AS text[]) FROM xmltest WHERE id = 42; +ERROR: cannot cast from 'xml' to 'text[]' at character 8 +SELECT xmlcast((xpath('//text1/integer1()', data))[1] AS int[]) FROM xmltest WHERE id = 42; +ERROR: cannot cast from 'xml' to 'integer[]' at character 8 +SELECT xmlcast(NULL AS text); +ERROR: cannot cast from 'unknown' to 'text' at character 8 +SELECT xmlcast('foo'::text AS varchar); +ERROR: cannot cast from 'text' to 'character varying' at character 8 +SELECT xmlcast(42 AS text); +ERROR: cannot cast from 'integer' to 'text' at character 8 +SELECT xmlcast(array['foo','bar'] AS xml); +ERROR: cannot cast from 'text[]' to 'xml' at character 8 +\set VERBOSITY default +-- xmlcast tests for "XML to non-XML" expressions +SELECT + xmlcast((xpath('//date1/text()', data))[1] AS date), pg_typeof(xmlcast((xpath('//date1/text()', data))[1] AS date)), + xmlcast((xpath('//date2/text()', data))[1] AS date), pg_typeof(xmlcast((xpath('//date2/text()', data))[1] AS date)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +------------+-----------+------------+----------- + 09-24-2002 | date | 09-24-2002 | date +(1 row) + +SELECT + xmlcast((xpath('//period1/text()', data))[1] AS interval), pg_typeof(xmlcast((xpath('//period1/text()', data))[1] AS interval)), + xmlcast((xpath('//period2/text()', data))[1] AS interval), pg_typeof(xmlcast((xpath('//period2/text()', data))[1] AS interval)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +----------------------------------------------+-----------+----------------------------------------------+----------- + @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs | interval | @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs | interval +(1 row) + +SELECT + xmlcast((xpath('//time/text()', data))[1] AS time), pg_typeof(xmlcast((xpath('//time/text()', data))[1] AS time)), + xmlcast((xpath('//time_tz1/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz1/text()', data))[1] AS time with time zone)), + xmlcast((xpath('//time_tz2/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz2/text()', data))[1] AS time with time zone)), + xmlcast((xpath('//time_tz3/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz3/text()', data))[1] AS time with time zone)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +------------+------------------------+-------------+---------------------+-------------+---------------------+-------------+--------------------- + 09:30:10.5 | time without time zone | 09:30:10+00 | time with time zone | 09:30:10-06 | time with time zone | 09:30:10+06 | time with time zone +(1 row) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS text)), + xmlcast((xpath('//text2/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS text)), + xmlcast((xpath('//text3/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS text)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------------------+-----------+---------------+----------- + foo bar | text | foo bar | text | foo & <"bar"> | text +(1 row) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS varchar)), + xmlcast((xpath('//text2/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS varchar)), + xmlcast((xpath('//text3/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS varchar)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-------------------+---------------------+-------------------+---------------+------------------- + foo bar | character varying | foo bar | character varying | foo & <"bar"> | character varying +(1 row) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS name)), + xmlcast((xpath('//text2/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS name)), + xmlcast((xpath('//text3/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS name)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------------------+-----------+---------------+----------- + foo bar | name | foo bar | name | foo & <"bar"> | name +(1 row) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS bpchar)), + xmlcast((xpath('//text2/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS bpchar)), + xmlcast((xpath('//text3/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS bpchar)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------------------+-----------+---------------+----------- + foo bar | character | foo bar | character | foo & <"bar"> | character +(1 row) + +SELECT + xmlcast((xpath('//decimal1/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal1/text()', data))[1] AS numeric)), + xmlcast((xpath('//decimal2/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal2/text()', data))[1] AS numeric)), + xmlcast((xpath('//decimal3/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal3/text()', data))[1] AS numeric)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +------------------+-----------+------------------+-----------+-------------------+----------- + 42.7312345678910 | numeric | 42.7312345678910 | numeric | -42.7312345678910 | numeric +(1 row) + +SELECT + xmlcast((xpath('//decimal1/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal1/text()', data))[1] AS double precision)), + xmlcast((xpath('//decimal2/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal2/text()', data))[1] AS double precision)), + xmlcast((xpath('//decimal3/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal3/text()', data))[1] AS double precision)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +-----------------+------------------+-----------------+------------------+------------------+------------------ + 42.731234567891 | double precision | 42.731234567891 | double precision | -42.731234567891 | double precision +(1 row) + +SELECT + xmlcast((xpath('//integer1/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer1/text()', data))[1] AS int)), + xmlcast((xpath('//integer2/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer2/text()', data))[1] AS int)), + xmlcast((xpath('//integer3/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer3/text()', data))[1] AS int)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- + 42 | integer | 42 | integer | -42 | integer +(1 row) + +SELECT + xmlcast((xpath('//long1/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long1/text()', data))[1] AS bigint)), + xmlcast((xpath('//long2/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long2/text()', data))[1] AS bigint)), + xmlcast((xpath('//long3/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long3/text()', data))[1] AS bigint)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +------------------+-----------+------------------+-----------+-------------------+----------- + 4273535420162021 | bigint | 4273535420162021 | bigint | -4273535420162021 | bigint +(1 row) + +SELECT + xmlcast((xpath('//bool1/@att', data))[1] AS boolean), pg_typeof(xmlcast((xpath('//bool1/@att', data))[1] AS boolean)), + xmlcast((xpath('//bool2/@att', data))[1] AS boolean), pg_typeof(xmlcast((xpath('//bool1/@att', data))[1] AS boolean)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+----------- + t | boolean | f | boolean +(1 row) + +SELECT xmlcast((xpath('//empty/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//empty/text()', data))[1] AS text)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof +---------+----------- + | text +(1 row) + +-- xmlcast tests for "XML to XML" expressions +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS xml)), + xmlcast((xpath('//text2/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS xml)), + xmlcast((xpath('//text3/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS xml)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------------------+-----------+-------------------------+----------- + foo bar | xml | foo bar | xml | foo & <"bar"> | xml +(1 row) + +-- xmlcast tests for "non-XML to XML" expressions +SELECT j, pg_typeof(j) FROM xmlcast(NULL AS xml) t(j); + j | pg_typeof +---+----------- + | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo' AS xml) t(j); + j | pg_typeof +-----+----------- + foo | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(''::text AS xml) t(j); + j | pg_typeof +---+----------- + | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(NULL::text AS xml) t(j); + j | pg_typeof +---+----------- + | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(''::xml AS text) t(j); + j | pg_typeof +---+----------- + | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(NULL::xml AS text) t(j); + j | pg_typeof +---+----------- + | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::text AS xml) t(j); + j | pg_typeof +-----------------------------------+----------- + foo & <"bar"> | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::varchar AS xml) t(j); + j | pg_typeof +-----------------------------------+----------- + foo & <"bar"> | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::name AS xml) t(j); + j | pg_typeof +-----------------------------------+----------- + foo & <"bar"> | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(xmltext(E'foo & <"bar">\r') AS text) t(j); + j | pg_typeof +-----------------+----------- + foo & <"bar">\r | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(xmlcast(E'foo & <"bar">\r' AS xml) AS text) t(j); + j | pg_typeof +-----------------+----------- + foo & <"bar">\r | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(to_date('29/05/2024','dd/mm/yyyy') AS xml) t(j); + j | pg_typeof +------------+----------- + 2024-05-29 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('2024-05-29 12:04:10.703585+02'::timestamp with time zone at time zone 'Europe/Berlin' AS xml) t(j); + j | pg_typeof +----------------------------+----------- + 2024-05-29T12:04:10.703585 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('2024-05-29 12:04:10.703585+02'::timestamp without time zone AS xml) t(j); + j | pg_typeof +----------------------------+----------- + 2024-05-29T12:04:10.703585 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval AS xml) t(j); + j | pg_typeof +----------------+----------- + P1Y2M3DT4H5M6S | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(427353542 AS xml) t(j); + j | pg_typeof +-----------+----------- + 427353542 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(4273535420162021 AS xml) t(j); + j | pg_typeof +------------------+----------- + 4273535420162021 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(42.007312345678910 AS xml) t(j); + j | pg_typeof +--------------------+----------- + 42.007312345678910 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(42.007312345678910::double precision AS xml) t(j); + j | pg_typeof +-------------------+----------- + 42.00731234567891 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(true AS xml) t(j); + j | pg_typeof +------+----------- + true | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(false AS xml) t(j); + j | pg_typeof +-------+----------- + false | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(42 = 73 AS xml) t(j); + j | pg_typeof +-------+----------- + false | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(42 <> 73 AS xml) t(j); + j | pg_typeof +------+----------- + true | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('11:11:11.5'::time AS xml) t(j); + j | pg_typeof +------------+----------- + 11:11:11.5 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('11:11:11.5'::time with time zone at time zone 'Europe/Berlin' AS xml) t(j); + j | pg_typeof +---------------+----------- + 19:11:11.5+01 | xml +(1 row) + +-- Convert an XML string to bytea and back to xml +SELECT xmlcast(convert_from(xmlcast('<"foo&bar">'::xml AS bytea),'UTF8')::xml AS text); + xmlcast +------------- + <"foo&bar"> +(1 row) + +SET xmlbinary TO hex; +SELECT xmlcast(E'\\xDEADBEEF'::bytea AS xml); + xmlcast +---------- + DEADBEEF +(1 row) + +SET xmlbinary TO base64; +SELECT xmlcast(E'\\xDEADBEEF'::bytea AS xml); + xmlcast +---------- + 3q2+7w== +(1 row) + +-- The BY REF and BY VALUE clauses are accepted but ignored. +-- This checks if the results are indeed the same as without the clauses. +SELECT + xmlcast('foo' AS xml)::text = xmlcast('foo' AS xml BY REF)::text, + xmlcast('foo' AS xml)::text = xmlcast('foo' AS xml BY VALUE)::text, + xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text BY REF), + xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast(42 AS xml)::text = xmlcast(42 AS xml BY REF)::text, + xmlcast(42 AS xml)::text = xmlcast(42 AS xml BY VALUE)::text, + xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY REF), + xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast(42.73 AS xml)::text = xmlcast(42.73 AS xml BY REF)::text, + xmlcast(42.73 AS xml)::text = xmlcast(42.73 AS xml BY VALUE)::text, + xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS numeric BY REF), + xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS numeric BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('2024-08-14'::date AS xml)::text = xmlcast('2024-08-14'::date AS xml BY REF)::text, + xmlcast('2024-08-14'::date AS xml)::text = xmlcast('2024-08-14'::date AS xml BY VALUE)::text, + xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14'::xml AS date BY REF), + xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14'::xml AS date BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('12:30:45'::time without time zone AS xml)::text = xmlcast('12:30:45'::time without time zone AS xml BY REF)::text, + xmlcast('12:30:45'::time without time zone AS xml)::text = xmlcast('12:30:45'::time without time zone AS xml BY VALUE)::text, + xmlcast('12:30:45'::xml AS time without time zone) = xmlcast('12:30:45'::xml AS time without time zone BY REF), + xmlcast('12:30:45'::xml AS time without time zone) = xmlcast('12:30:45'::xml AS time without time zone BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('09:30:10+06:00'::time with time zone AS xml)::text = xmlcast('09:30:10+06:00'::time with time zone AS xml BY REF)::text, + xmlcast('09:30:10+06:00'::time with time zone AS xml)::text = xmlcast('09:30:10+06:00'::time with time zone AS xml BY VALUE)::text, + xmlcast('09:30:10+06:00'::xml AS time with time zone) = xmlcast('09:30:10+06:00'::xml AS time with time zone BY REF), + xmlcast('09:30:10+06:00'::xml AS time with time zone) = xmlcast('09:30:10+06:00'::xml AS time with time zone BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml)::text = xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml BY REF)::text, + xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml)::text = xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml BY VALUE)::text, + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) = xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone BY REF), + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) = xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('1 year 2 mons'::interval AS xml)::text = xmlcast('1 year 2 mons'::interval AS xml BY REF)::text, + xmlcast('1 year 2 mons'::interval AS xml)::text = xmlcast('1 year 2 mons'::interval AS xml BY VALUE)::text, + xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 year 2 mons'::xml AS interval BY REF), + xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 year 2 mons'::xml AS interval BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +CREATE VIEW view_xmlcast_to_xml AS +SELECT + xmlcast(NULL AS xml) AS c1, + xmlcast('foo' AS xml) AS c2, + xmlcast(''::text AS xml) AS c3, + xmlcast(NULL::text AS xml) AS c4, + xmlcast(''::xml AS text) AS c5, + xmlcast(NULL::xml AS text) c6, + xmlcast('foo & <"bar">'::text AS xml) AS c7, + xmlcast('foo & <"bar">'::varchar AS xml) AS c8, + xmlcast('foo & <"bar">'::name AS xml) AS c9, + xmlcast(xmltext(E'foo & <"bar">\r') AS text) AS c10, + xmlcast(xmlcast(E'foo & <"bar">\r' AS xml) AS text) AS c11, + xmlcast(to_date('29/05/2024','dd/mm/yyyy') AS xml) AS c12, + xmlcast('2024-05-29 12:04:10.703585+02'::timestamp with time zone at time zone 'Europe/Berlin' AS xml) AS c13, + xmlcast('2024-05-29 12:04:10.703585+02'::timestamp without time zone AS xml) AS c14, + xmlcast('1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval AS xml) AS c15, + xmlcast(427353542 AS xml) AS c16, + xmlcast(4273535420162021 AS xml) AS c17, + xmlcast(42.007312345678910 AS xml) AS c18, + xmlcast(42.007312345678910::double precision AS xml) AS c19, + xmlcast(true AS xml) AS c20, + xmlcast(false AS xml) AS c21, + xmlcast(42 = 73 AS xml) AS c22, + xmlcast(42 <> 73 AS xml) AS c23, + xmlcast('11:11:11.5'::time AS xml) AS c24, + xmlcast('11:11:11.5'::time with time zone at time zone 'Europe/Berlin' AS xml) AS c25; +\sv view_xmlcast_to_xml +CREATE OR REPLACE VIEW public.view_xmlcast_to_xml AS + SELECT XMLCAST(NULL::text AS xml)::xml AS c1, + XMLCAST('foo'::text AS xml)::xml AS c2, + XMLCAST(''::text AS xml)::xml AS c3, + XMLCAST(NULL::text AS xml)::xml AS c4, + XMLCAST(''::xml AS text)::text AS c5, + XMLCAST(NULL::xml AS text)::text AS c6, + XMLCAST('foo & <"bar">'::text AS xml)::xml AS c7, + XMLCAST('foo & <"bar">'::character varying AS xml)::xml AS c8, + XMLCAST('foo & <"bar">'::name::text AS xml)::xml AS c9, + XMLCAST(xmltext('foo & <"bar"> '::text) AS text)::text AS c10, + XMLCAST(XMLCAST('foo & <"bar"> '::text AS xml)::xml AS text)::text AS c11, + XMLCAST(to_date('29/05/2024'::text, 'dd/mm/yyyy'::text) AS xml)::xml AS c12, + XMLCAST(('Wed May 29 03:04:10.703585 2024 PDT'::timestamp with time zone AT TIME ZONE 'Europe/Berlin'::text) AS xml)::xml AS c13, + XMLCAST('Wed May 29 12:04:10.703585 2024'::timestamp without time zone AS xml)::xml AS c14, + XMLCAST('@ 1 year 2 mons 3 days 4 hours 5 mins 6 secs'::interval AS xml)::xml AS c15, + XMLCAST(427353542::text AS xml)::xml AS c16, + XMLCAST('4273535420162021'::bigint::text AS xml)::xml AS c17, + XMLCAST(42.007312345678910::text AS xml)::xml AS c18, + XMLCAST(42.007312345678910::double precision::text AS xml)::xml AS c19, + XMLCAST(true AS xml)::xml AS c20, + XMLCAST(false AS xml)::xml AS c21, + XMLCAST(42 = 73 AS xml)::xml AS c22, + XMLCAST(42 <> 73 AS xml)::xml AS c23, + XMLCAST('11:11:11.5'::time without time zone::text AS xml)::xml AS c24, + XMLCAST(('11:11:11.5-07'::time with time zone AT TIME ZONE 'Europe/Berlin'::text)::text AS xml)::xml AS c25 +SELECT * FROM view_xmlcast_to_xml; + c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8 | c9 | c10 | c11 | c12 | c13 | c14 | c15 | c16 | c17 | c18 | c19 | c20 | c21 | c22 | c23 | c24 | c25 +----+-----+----+----+----+----+-----------------------------------+-----------------------------------+-----------------------------------+-----------------+-----------------+------------+----------------------------+----------------------------+----------------+-----------+------------------+--------------------+-------------------+------+-------+-------+------+------------+--------------- + | foo | | | | | foo & <"bar"> | foo & <"bar"> | foo & <"bar"> | foo & <"bar">\r | foo & <"bar">\r | 2024-05-29 | 2024-05-29T12:04:10.703585 | 2024-05-29T12:04:10.703585 | P1Y2M3DT4H5M6S | 427353542 | 4273535420162021 | 42.007312345678910 | 42.00731234567891 | true | false | false | true | 11:11:11.5 | 19:11:11.5+01 +(1 row) + +CREATE VIEW view_xmlcast_from_xml AS +SELECT + xmlcast('P1Y2M3DT4H5M6S'::xml AS interval) AS c1, + xmlcast('1 year 2 mons 3 days 4 hours 5 minutes 6 seconds'::xml AS interval) AS c2, + xmlcast('2002-09-24'::xml AS date) AS c3, + xmlcast('2002-09-24+06:00'::xml AS date) AS c4, + xmlcast('09:30:10Z'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c5, + xmlcast('09:30:10-06:00'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c6, + xmlcast('09:30:10+06:00'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c7, + xmlcast('2002-05-30T09:30:10Z'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c8, + xmlcast('2002-05-30T09:30:10-06:00'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c9, + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c10, + xmlcast('foo bar'::xml AS text) AS c11, + xmlcast(' foo bar '::xml AS varchar) AS c12, + xmlcast('foo & <"bar">'::xml AS text) AS c13, + xmlcast('42.7312345678910'::xml AS numeric) AS c14, + xmlcast('+42.7312345678910'::xml AS numeric) AS c15, + xmlcast('-42.7312345678910'::xml AS numeric) AS c16, + xmlcast('42'::xml AS integer) AS c17, + xmlcast('+42'::xml AS integer) AS c18, + xmlcast('-42'::xml AS integer) AS c19, + xmlcast('4273535420162021'::xml AS bigint) AS c20, + xmlcast('+4273535420162021'::xml AS bigint) AS c21, + xmlcast('-4273535420162021'::xml AS bigint) AS c22, + xmlcast('true'::xml AS boolean) AS c23, + xmlcast('false'::xml AS boolean) AS c24, + xmlcast(''::xml AS character varying) AS c25, + xmlcast(NULL::xml AS character varying) AS c26; +\sv view_xmlcast_from_xml +CREATE OR REPLACE VIEW public.view_xmlcast_from_xml AS + SELECT XMLCAST('P1Y2M3DT4H5M6S'::xml AS interval)::interval AS c1, + XMLCAST('1 year 2 mons 3 days 4 hours 5 minutes 6 seconds'::xml AS interval)::interval AS c2, + XMLCAST('2002-09-24'::xml AS date)::date AS c3, + XMLCAST('2002-09-24+06:00'::xml AS date)::date AS c4, + (XMLCAST('09:30:10Z'::xml AS time with time zone)::time with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c5, + (XMLCAST('09:30:10-06:00'::xml AS time with time zone)::time with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c6, + (XMLCAST('09:30:10+06:00'::xml AS time with time zone)::time with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c7, + (XMLCAST('2002-05-30T09:30:10Z'::xml AS timestamp with time zone)::timestamp with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c8, + (XMLCAST('2002-05-30T09:30:10-06:00'::xml AS timestamp with time zone)::timestamp with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c9, + (XMLCAST('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone)::timestamp with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c10, + XMLCAST('foo bar'::xml AS text)::text AS c11, + XMLCAST(' foo bar '::xml AS character varying)::character varying AS c12, + XMLCAST('foo & <"bar">'::xml AS text)::text AS c13, + XMLCAST('42.7312345678910'::xml AS numeric)::numeric AS c14, + XMLCAST('+42.7312345678910'::xml AS numeric)::numeric AS c15, + XMLCAST('-42.7312345678910'::xml AS numeric)::numeric AS c16, + XMLCAST('42'::xml AS integer)::integer AS c17, + XMLCAST('+42'::xml AS integer)::integer AS c18, + XMLCAST('-42'::xml AS integer)::integer AS c19, + XMLCAST('4273535420162021'::xml AS bigint)::bigint AS c20, + XMLCAST('+4273535420162021'::xml AS bigint)::bigint AS c21, + XMLCAST('-4273535420162021'::xml AS bigint)::bigint AS c22, + XMLCAST('true'::xml AS boolean)::boolean AS c23, + XMLCAST('false'::xml AS boolean)::boolean AS c24, + XMLCAST(''::xml AS character varying)::character varying AS c25, + XMLCAST(NULL::xml AS character varying)::character varying AS c26 +SELECT * FROM view_xmlcast_from_xml; + c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8 | c9 | c10 | c11 | c12 | c13 | c14 | c15 | c16 | c17 | c18 | c19 | c20 | c21 | c22 | c23 | c24 | c25 | c26 +----------------------------------------------+----------------------------------------------+------------+------------+-------------+-------------+-------------+--------------------------+--------------------------+--------------------------+---------+---------------------+---------------+------------------+------------------+-------------------+-----+-----+-----+------------------+------------------+-------------------+-----+-----+-----+----- + @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs | @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs | 09-24-2002 | 09-24-2002 | 10:30:10+01 | 16:30:10+01 | 04:30:10+01 | Thu May 30 11:30:10 2002 | Thu May 30 17:30:10 2002 | Thu May 30 05:30:10 2002 | foo bar | foo bar | foo & <"bar"> | 42.7312345678910 | 42.7312345678910 | -42.7312345678910 | 42 | 42 | -42 | 4273535420162021 | 4273535420162021 | -4273535420162021 | t | f | | +(1 row) + diff --git a/src/test/regress/expected/xml_1.out b/src/test/regress/expected/xml_1.out index 73c411118a..40d642d59d 100644 --- a/src/test/regress/expected/xml_1.out +++ b/src/test/regress/expected/xml_1.out @@ -1496,3 +1496,432 @@ ERROR: unsupported XML feature LINE 1: SELECT xmltext('x'|| '

73

'::xml || .42 || true || 'j':... ^ DETAIL: This functionality requires the server to be built with libxml support. +-- for xmlcast() tests +INSERT INTO xmltest + VALUES (42, +' + + P1Y2M3DT4H5M6S + 1 year 2 mons 3 days 4 hours 5 minutes 6 seconds + 2002-09-24 + 2002-09-24+06:00 + + 09:30:10Z + 09:30:10-06:00 + 09:30:10+06:00 + 2002-05-30T09:00:00 + 2002-05-30T09:30:10.5 + 2002-05-30T09:30:10Z + 2002-05-30T09:30:10-06:00 + 2002-05-30T09:30:10+06:00 + foo bar + foo bar + foo & <"bar"> + 42.7312345678910 + +42.7312345678910 + -42.7312345678910 + 42 + +42 + -42 + 4273535420162021 + +4273535420162021 + -4273535420162021 + 42 + 73 + + '::xml +); +ERROR: unsupported XML feature +LINE 3: ' + ^ +DETAIL: This functionality requires the server to be built with libxml support. +-- This prevents the xmlcast regression tests from failing if the system's timezone has been changed. +SET timezone TO 'America/Los_Angeles'; +-- xmlcast exceptions +\set VERBOSITY terse +SELECT xmlcast((xpath('//text1/text()', data))[1] AS text[]) FROM xmltest WHERE id = 42; +ERROR: cannot cast from 'xml' to 'text[]' at character 8 +SELECT xmlcast((xpath('//text1/integer1()', data))[1] AS int[]) FROM xmltest WHERE id = 42; +ERROR: cannot cast from 'xml' to 'integer[]' at character 8 +SELECT xmlcast(NULL AS text); +ERROR: cannot cast from 'unknown' to 'text' at character 8 +SELECT xmlcast('foo'::text AS varchar); +ERROR: cannot cast from 'text' to 'character varying' at character 8 +SELECT xmlcast(42 AS text); +ERROR: cannot cast from 'integer' to 'text' at character 8 +SELECT xmlcast(array['foo','bar'] AS xml); +ERROR: cannot cast from 'text[]' to 'xml' at character 8 +\set VERBOSITY default +-- xmlcast tests for "XML to non-XML" expressions +SELECT + xmlcast((xpath('//date1/text()', data))[1] AS date), pg_typeof(xmlcast((xpath('//date1/text()', data))[1] AS date)), + xmlcast((xpath('//date2/text()', data))[1] AS date), pg_typeof(xmlcast((xpath('//date2/text()', data))[1] AS date)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//period1/text()', data))[1] AS interval), pg_typeof(xmlcast((xpath('//period1/text()', data))[1] AS interval)), + xmlcast((xpath('//period2/text()', data))[1] AS interval), pg_typeof(xmlcast((xpath('//period2/text()', data))[1] AS interval)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//time/text()', data))[1] AS time), pg_typeof(xmlcast((xpath('//time/text()', data))[1] AS time)), + xmlcast((xpath('//time_tz1/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz1/text()', data))[1] AS time with time zone)), + xmlcast((xpath('//time_tz2/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz2/text()', data))[1] AS time with time zone)), + xmlcast((xpath('//time_tz3/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz3/text()', data))[1] AS time with time zone)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS text)), + xmlcast((xpath('//text2/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS text)), + xmlcast((xpath('//text3/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS text)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS varchar)), + xmlcast((xpath('//text2/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS varchar)), + xmlcast((xpath('//text3/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS varchar)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS name)), + xmlcast((xpath('//text2/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS name)), + xmlcast((xpath('//text3/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS name)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS bpchar)), + xmlcast((xpath('//text2/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS bpchar)), + xmlcast((xpath('//text3/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS bpchar)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//decimal1/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal1/text()', data))[1] AS numeric)), + xmlcast((xpath('//decimal2/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal2/text()', data))[1] AS numeric)), + xmlcast((xpath('//decimal3/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal3/text()', data))[1] AS numeric)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//decimal1/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal1/text()', data))[1] AS double precision)), + xmlcast((xpath('//decimal2/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal2/text()', data))[1] AS double precision)), + xmlcast((xpath('//decimal3/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal3/text()', data))[1] AS double precision)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//integer1/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer1/text()', data))[1] AS int)), + xmlcast((xpath('//integer2/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer2/text()', data))[1] AS int)), + xmlcast((xpath('//integer3/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer3/text()', data))[1] AS int)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//long1/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long1/text()', data))[1] AS bigint)), + xmlcast((xpath('//long2/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long2/text()', data))[1] AS bigint)), + xmlcast((xpath('//long3/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long3/text()', data))[1] AS bigint)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +SELECT + xmlcast((xpath('//bool1/@att', data))[1] AS boolean), pg_typeof(xmlcast((xpath('//bool1/@att', data))[1] AS boolean)), + xmlcast((xpath('//bool2/@att', data))[1] AS boolean), pg_typeof(xmlcast((xpath('//bool1/@att', data))[1] AS boolean)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+----------- +(0 rows) + +SELECT xmlcast((xpath('//empty/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//empty/text()', data))[1] AS text)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof +---------+----------- +(0 rows) + +-- xmlcast tests for "XML to XML" expressions +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS xml)), + xmlcast((xpath('//text2/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS xml)), + xmlcast((xpath('//text3/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS xml)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- +(0 rows) + +-- xmlcast tests for "non-XML to XML" expressions +SELECT j, pg_typeof(j) FROM xmlcast(NULL AS xml) t(j); + j | pg_typeof +---+----------- + | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo' AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(''::text AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(NULL::text AS xml) t(j); + j | pg_typeof +---+----------- + | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(''::xml AS text) t(j); +ERROR: unsupported XML feature +LINE 1: SELECT j, pg_typeof(j) FROM xmlcast(''::xml AS text) t(j); + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(NULL::xml AS text) t(j); + j | pg_typeof +---+----------- + | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::text AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::varchar AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::name AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(xmltext(E'foo & <"bar">\r') AS text) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(xmlcast(E'foo & <"bar">\r' AS xml) AS text) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(to_date('29/05/2024','dd/mm/yyyy') AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast('2024-05-29 12:04:10.703585+02'::timestamp with time zone at time zone 'Europe/Berlin' AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast('2024-05-29 12:04:10.703585+02'::timestamp without time zone AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast('1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(427353542 AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(4273535420162021 AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(42.007312345678910 AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(42.007312345678910::double precision AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(true AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(false AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(42 = 73 AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast(42 <> 73 AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast('11:11:11.5'::time AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SELECT j, pg_typeof(j) FROM xmlcast('11:11:11.5'::time with time zone at time zone 'Europe/Berlin' AS xml) t(j); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +-- Convert an XML string to bytea and back to xml +SELECT xmlcast(convert_from(xmlcast('<"foo&bar">'::xml AS bytea),'UTF8')::xml AS text); +ERROR: unsupported XML feature +LINE 1: SELECT xmlcast(convert_from(xmlcast('<"foo&bar&q... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SET xmlbinary TO hex; +SELECT xmlcast(E'\\xDEADBEEF'::bytea AS xml); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +SET xmlbinary TO base64; +SELECT xmlcast(E'\\xDEADBEEF'::bytea AS xml); +ERROR: unsupported XML feature +DETAIL: This functionality requires the server to be built with libxml support. +-- The BY REF and BY VALUE clauses are accepted but ignored. +-- This checks if the results are indeed the same as without the clauses. +SELECT + xmlcast('foo' AS xml)::text = xmlcast('foo' AS xml BY REF)::text, + xmlcast('foo' AS xml)::text = xmlcast('foo' AS xml BY VALUE)::text, + xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text BY REF), + xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text BY VALUE); +ERROR: unsupported XML feature +LINE 4: xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text B... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SELECT + xmlcast(42 AS xml)::text = xmlcast(42 AS xml BY REF)::text, + xmlcast(42 AS xml)::text = xmlcast(42 AS xml BY VALUE)::text, + xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY REF), + xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY VALUE); +ERROR: unsupported XML feature +LINE 4: xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY RE... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SELECT + xmlcast(42.73 AS xml)::text = xmlcast(42.73 AS xml BY REF)::text, + xmlcast(42.73 AS xml)::text = xmlcast(42.73 AS xml BY VALUE)::text, + xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS numeric BY REF), + xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS numeric BY VALUE); +ERROR: unsupported XML feature +LINE 4: xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SELECT + xmlcast('2024-08-14'::date AS xml)::text = xmlcast('2024-08-14'::date AS xml BY REF)::text, + xmlcast('2024-08-14'::date AS xml)::text = xmlcast('2024-08-14'::date AS xml BY VALUE)::text, + xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14'::xml AS date BY REF), + xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14'::xml AS date BY VALUE); +ERROR: unsupported XML feature +LINE 4: xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14':... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SELECT + xmlcast('12:30:45'::time without time zone AS xml)::text = xmlcast('12:30:45'::time without time zone AS xml BY REF)::text, + xmlcast('12:30:45'::time without time zone AS xml)::text = xmlcast('12:30:45'::time without time zone AS xml BY VALUE)::text, + xmlcast('12:30:45'::xml AS time without time zone) = xmlcast('12:30:45'::xml AS time without time zone BY REF), + xmlcast('12:30:45'::xml AS time without time zone) = xmlcast('12:30:45'::xml AS time without time zone BY VALUE); +ERROR: unsupported XML feature +LINE 4: xmlcast('12:30:45'::xml AS time without time zone) = xmlca... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SELECT + xmlcast('09:30:10+06:00'::time with time zone AS xml)::text = xmlcast('09:30:10+06:00'::time with time zone AS xml BY REF)::text, + xmlcast('09:30:10+06:00'::time with time zone AS xml)::text = xmlcast('09:30:10+06:00'::time with time zone AS xml BY VALUE)::text, + xmlcast('09:30:10+06:00'::xml AS time with time zone) = xmlcast('09:30:10+06:00'::xml AS time with time zone BY REF), + xmlcast('09:30:10+06:00'::xml AS time with time zone) = xmlcast('09:30:10+06:00'::xml AS time with time zone BY VALUE); +ERROR: unsupported XML feature +LINE 4: xmlcast('09:30:10+06:00'::xml AS time with time zone) = xm... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SELECT + xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml)::text = xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml BY REF)::text, + xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml)::text = xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml BY VALUE)::text, + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) = xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone BY REF), + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) = xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone BY VALUE); +ERROR: unsupported XML feature +LINE 4: xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +SELECT + xmlcast('1 year 2 mons'::interval AS xml)::text = xmlcast('1 year 2 mons'::interval AS xml BY REF)::text, + xmlcast('1 year 2 mons'::interval AS xml)::text = xmlcast('1 year 2 mons'::interval AS xml BY VALUE)::text, + xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 year 2 mons'::xml AS interval BY REF), + xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 year 2 mons'::xml AS interval BY VALUE); +ERROR: unsupported XML feature +LINE 4: xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 yea... + ^ +DETAIL: This functionality requires the server to be built with libxml support. +CREATE VIEW view_xmlcast_to_xml AS +SELECT + xmlcast(NULL AS xml) AS c1, + xmlcast('foo' AS xml) AS c2, + xmlcast(''::text AS xml) AS c3, + xmlcast(NULL::text AS xml) AS c4, + xmlcast(''::xml AS text) AS c5, + xmlcast(NULL::xml AS text) c6, + xmlcast('foo & <"bar">'::text AS xml) AS c7, + xmlcast('foo & <"bar">'::varchar AS xml) AS c8, + xmlcast('foo & <"bar">'::name AS xml) AS c9, + xmlcast(xmltext(E'foo & <"bar">\r') AS text) AS c10, + xmlcast(xmlcast(E'foo & <"bar">\r' AS xml) AS text) AS c11, + xmlcast(to_date('29/05/2024','dd/mm/yyyy') AS xml) AS c12, + xmlcast('2024-05-29 12:04:10.703585+02'::timestamp with time zone at time zone 'Europe/Berlin' AS xml) AS c13, + xmlcast('2024-05-29 12:04:10.703585+02'::timestamp without time zone AS xml) AS c14, + xmlcast('1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval AS xml) AS c15, + xmlcast(427353542 AS xml) AS c16, + xmlcast(4273535420162021 AS xml) AS c17, + xmlcast(42.007312345678910 AS xml) AS c18, + xmlcast(42.007312345678910::double precision AS xml) AS c19, + xmlcast(true AS xml) AS c20, + xmlcast(false AS xml) AS c21, + xmlcast(42 = 73 AS xml) AS c22, + xmlcast(42 <> 73 AS xml) AS c23, + xmlcast('11:11:11.5'::time AS xml) AS c24, + xmlcast('11:11:11.5'::time with time zone at time zone 'Europe/Berlin' AS xml) AS c25; +ERROR: unsupported XML feature +LINE 7: xmlcast(''::xml AS text) AS c5, + ^ +DETAIL: This functionality requires the server to be built with libxml support. +\sv view_xmlcast_to_xml +ERROR: relation "view_xmlcast_to_xml" does not exist +SELECT * FROM view_xmlcast_to_xml; +ERROR: relation "view_xmlcast_to_xml" does not exist +LINE 1: SELECT * FROM view_xmlcast_to_xml; + ^ +CREATE VIEW view_xmlcast_from_xml AS +SELECT + xmlcast('P1Y2M3DT4H5M6S'::xml AS interval) AS c1, + xmlcast('1 year 2 mons 3 days 4 hours 5 minutes 6 seconds'::xml AS interval) AS c2, + xmlcast('2002-09-24'::xml AS date) AS c3, + xmlcast('2002-09-24+06:00'::xml AS date) AS c4, + xmlcast('09:30:10Z'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c5, + xmlcast('09:30:10-06:00'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c6, + xmlcast('09:30:10+06:00'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c7, + xmlcast('2002-05-30T09:30:10Z'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c8, + xmlcast('2002-05-30T09:30:10-06:00'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c9, + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c10, + xmlcast('foo bar'::xml AS text) AS c11, + xmlcast(' foo bar '::xml AS varchar) AS c12, + xmlcast('foo & <"bar">'::xml AS text) AS c13, + xmlcast('42.7312345678910'::xml AS numeric) AS c14, + xmlcast('+42.7312345678910'::xml AS numeric) AS c15, + xmlcast('-42.7312345678910'::xml AS numeric) AS c16, + xmlcast('42'::xml AS integer) AS c17, + xmlcast('+42'::xml AS integer) AS c18, + xmlcast('-42'::xml AS integer) AS c19, + xmlcast('4273535420162021'::xml AS bigint) AS c20, + xmlcast('+4273535420162021'::xml AS bigint) AS c21, + xmlcast('-4273535420162021'::xml AS bigint) AS c22, + xmlcast('true'::xml AS boolean) AS c23, + xmlcast('false'::xml AS boolean) AS c24, + xmlcast(''::xml AS character varying) AS c25, + xmlcast(NULL::xml AS character varying) AS c26; +ERROR: unsupported XML feature +LINE 3: xmlcast('P1Y2M3DT4H5M6S'::xml AS interval) AS c1, + ^ +DETAIL: This functionality requires the server to be built with libxml support. +\sv view_xmlcast_from_xml +ERROR: relation "view_xmlcast_from_xml" does not exist +SELECT * FROM view_xmlcast_from_xml; +ERROR: relation "view_xmlcast_from_xml" does not exist +LINE 1: SELECT * FROM view_xmlcast_from_xml; + ^ diff --git a/src/test/regress/expected/xml_2.out b/src/test/regress/expected/xml_2.out index a85d95358d..adb0ac0ab2 100644 --- a/src/test/regress/expected/xml_2.out +++ b/src/test/regress/expected/xml_2.out @@ -1867,3 +1867,570 @@ SELECT xmltext('x'|| '

73

'::xml || .42 || true || 'j'::char); x<P>73</P>0.42truej (1 row) +-- for xmlcast() tests +INSERT INTO xmltest + VALUES (42, +' + + P1Y2M3DT4H5M6S + 1 year 2 mons 3 days 4 hours 5 minutes 6 seconds + 2002-09-24 + 2002-09-24+06:00 + + 09:30:10Z + 09:30:10-06:00 + 09:30:10+06:00 + 2002-05-30T09:00:00 + 2002-05-30T09:30:10.5 + 2002-05-30T09:30:10Z + 2002-05-30T09:30:10-06:00 + 2002-05-30T09:30:10+06:00 + foo bar + foo bar + foo & <"bar"> + 42.7312345678910 + +42.7312345678910 + -42.7312345678910 + 42 + +42 + -42 + 4273535420162021 + +4273535420162021 + -4273535420162021 + 42 + 73 + + '::xml +); +-- This prevents the xmlcast regression tests from failing if the system's timezone has been changed. +SET timezone TO 'America/Los_Angeles'; +-- xmlcast exceptions +\set VERBOSITY terse +SELECT xmlcast((xpath('//text1/text()', data))[1] AS text[]) FROM xmltest WHERE id = 42; +ERROR: cannot cast from 'xml' to 'text[]' at character 8 +SELECT xmlcast((xpath('//text1/integer1()', data))[1] AS int[]) FROM xmltest WHERE id = 42; +ERROR: cannot cast from 'xml' to 'integer[]' at character 8 +SELECT xmlcast(NULL AS text); +ERROR: cannot cast from 'unknown' to 'text' at character 8 +SELECT xmlcast('foo'::text AS varchar); +ERROR: cannot cast from 'text' to 'character varying' at character 8 +SELECT xmlcast(42 AS text); +ERROR: cannot cast from 'integer' to 'text' at character 8 +SELECT xmlcast(array['foo','bar'] AS xml); +ERROR: cannot cast from 'text[]' to 'xml' at character 8 +\set VERBOSITY default +-- xmlcast tests for "XML to non-XML" expressions +SELECT + xmlcast((xpath('//date1/text()', data))[1] AS date), pg_typeof(xmlcast((xpath('//date1/text()', data))[1] AS date)), + xmlcast((xpath('//date2/text()', data))[1] AS date), pg_typeof(xmlcast((xpath('//date2/text()', data))[1] AS date)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +------------+-----------+------------+----------- + 09-24-2002 | date | 09-24-2002 | date +(1 row) + +SELECT + xmlcast((xpath('//period1/text()', data))[1] AS interval), pg_typeof(xmlcast((xpath('//period1/text()', data))[1] AS interval)), + xmlcast((xpath('//period2/text()', data))[1] AS interval), pg_typeof(xmlcast((xpath('//period2/text()', data))[1] AS interval)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +----------------------------------------------+-----------+----------------------------------------------+----------- + @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs | interval | @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs | interval +(1 row) + +SELECT + xmlcast((xpath('//time/text()', data))[1] AS time), pg_typeof(xmlcast((xpath('//time/text()', data))[1] AS time)), + xmlcast((xpath('//time_tz1/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz1/text()', data))[1] AS time with time zone)), + xmlcast((xpath('//time_tz2/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz2/text()', data))[1] AS time with time zone)), + xmlcast((xpath('//time_tz3/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz3/text()', data))[1] AS time with time zone)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +------------+------------------------+-------------+---------------------+-------------+---------------------+-------------+--------------------- + 09:30:10.5 | time without time zone | 09:30:10+00 | time with time zone | 09:30:10-06 | time with time zone | 09:30:10+06 | time with time zone +(1 row) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS text)), + xmlcast((xpath('//text2/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS text)), + xmlcast((xpath('//text3/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS text)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------------------+-----------+---------------+----------- + foo bar | text | foo bar | text | foo & <"bar"> | text +(1 row) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS varchar)), + xmlcast((xpath('//text2/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS varchar)), + xmlcast((xpath('//text3/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS varchar)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-------------------+---------------------+-------------------+---------------+------------------- + foo bar | character varying | foo bar | character varying | foo & <"bar"> | character varying +(1 row) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS name)), + xmlcast((xpath('//text2/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS name)), + xmlcast((xpath('//text3/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS name)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------------------+-----------+---------------+----------- + foo bar | name | foo bar | name | foo & <"bar"> | name +(1 row) + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS bpchar)), + xmlcast((xpath('//text2/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS bpchar)), + xmlcast((xpath('//text3/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS bpchar)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------------------+-----------+---------------+----------- + foo bar | character | foo bar | character | foo & <"bar"> | character +(1 row) + +SELECT + xmlcast((xpath('//decimal1/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal1/text()', data))[1] AS numeric)), + xmlcast((xpath('//decimal2/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal2/text()', data))[1] AS numeric)), + xmlcast((xpath('//decimal3/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal3/text()', data))[1] AS numeric)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +------------------+-----------+------------------+-----------+-------------------+----------- + 42.7312345678910 | numeric | 42.7312345678910 | numeric | -42.7312345678910 | numeric +(1 row) + +SELECT + xmlcast((xpath('//decimal1/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal1/text()', data))[1] AS double precision)), + xmlcast((xpath('//decimal2/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal2/text()', data))[1] AS double precision)), + xmlcast((xpath('//decimal3/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal3/text()', data))[1] AS double precision)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +-----------------+------------------+-----------------+------------------+------------------+------------------ + 42.731234567891 | double precision | 42.731234567891 | double precision | -42.731234567891 | double precision +(1 row) + +SELECT + xmlcast((xpath('//integer1/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer1/text()', data))[1] AS int)), + xmlcast((xpath('//integer2/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer2/text()', data))[1] AS int)), + xmlcast((xpath('//integer3/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer3/text()', data))[1] AS int)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+-----------+---------+----------- + 42 | integer | 42 | integer | -42 | integer +(1 row) + +SELECT + xmlcast((xpath('//long1/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long1/text()', data))[1] AS bigint)), + xmlcast((xpath('//long2/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long2/text()', data))[1] AS bigint)), + xmlcast((xpath('//long3/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long3/text()', data))[1] AS bigint)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +------------------+-----------+------------------+-----------+-------------------+----------- + 4273535420162021 | bigint | 4273535420162021 | bigint | -4273535420162021 | bigint +(1 row) + +SELECT + xmlcast((xpath('//bool1/@att', data))[1] AS boolean), pg_typeof(xmlcast((xpath('//bool1/@att', data))[1] AS boolean)), + xmlcast((xpath('//bool2/@att', data))[1] AS boolean), pg_typeof(xmlcast((xpath('//bool1/@att', data))[1] AS boolean)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------+----------- + t | boolean | f | boolean +(1 row) + +SELECT xmlcast((xpath('//empty/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//empty/text()', data))[1] AS text)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof +---------+----------- + | text +(1 row) + +-- xmlcast tests for "XML to XML" expressions +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS xml)), + xmlcast((xpath('//text2/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS xml)), + xmlcast((xpath('//text3/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS xml)) +FROM xmltest WHERE id = 42; + xmlcast | pg_typeof | xmlcast | pg_typeof | xmlcast | pg_typeof +---------+-----------+---------------------+-----------+-------------------------+----------- + foo bar | xml | foo bar | xml | foo & <"bar"> | xml +(1 row) + +-- xmlcast tests for "non-XML to XML" expressions +SELECT j, pg_typeof(j) FROM xmlcast(NULL AS xml) t(j); + j | pg_typeof +---+----------- + | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo' AS xml) t(j); + j | pg_typeof +-----+----------- + foo | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(''::text AS xml) t(j); + j | pg_typeof +---+----------- + | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(NULL::text AS xml) t(j); + j | pg_typeof +---+----------- + | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(''::xml AS text) t(j); + j | pg_typeof +---+----------- + | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(NULL::xml AS text) t(j); + j | pg_typeof +---+----------- + | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::text AS xml) t(j); + j | pg_typeof +-----------------------------------+----------- + foo & <"bar"> | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::varchar AS xml) t(j); + j | pg_typeof +-----------------------------------+----------- + foo & <"bar"> | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::name AS xml) t(j); + j | pg_typeof +-----------------------------------+----------- + foo & <"bar"> | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(xmltext(E'foo & <"bar">\r') AS text) t(j); + j | pg_typeof +-----------------+----------- + foo & <"bar">\r | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(xmlcast(E'foo & <"bar">\r' AS xml) AS text) t(j); + j | pg_typeof +-----------------+----------- + foo & <"bar">\r | text +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(to_date('29/05/2024','dd/mm/yyyy') AS xml) t(j); + j | pg_typeof +------------+----------- + 2024-05-29 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('2024-05-29 12:04:10.703585+02'::timestamp with time zone at time zone 'Europe/Berlin' AS xml) t(j); + j | pg_typeof +----------------------------+----------- + 2024-05-29T12:04:10.703585 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('2024-05-29 12:04:10.703585+02'::timestamp without time zone AS xml) t(j); + j | pg_typeof +----------------------------+----------- + 2024-05-29T12:04:10.703585 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval AS xml) t(j); + j | pg_typeof +----------------+----------- + P1Y2M3DT4H5M6S | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(427353542 AS xml) t(j); + j | pg_typeof +-----------+----------- + 427353542 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(4273535420162021 AS xml) t(j); + j | pg_typeof +------------------+----------- + 4273535420162021 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(42.007312345678910 AS xml) t(j); + j | pg_typeof +--------------------+----------- + 42.007312345678910 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(42.007312345678910::double precision AS xml) t(j); + j | pg_typeof +-------------------+----------- + 42.00731234567891 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(true AS xml) t(j); + j | pg_typeof +------+----------- + true | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(false AS xml) t(j); + j | pg_typeof +-------+----------- + false | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(42 = 73 AS xml) t(j); + j | pg_typeof +-------+----------- + false | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast(42 <> 73 AS xml) t(j); + j | pg_typeof +------+----------- + true | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('11:11:11.5'::time AS xml) t(j); + j | pg_typeof +------------+----------- + 11:11:11.5 | xml +(1 row) + +SELECT j, pg_typeof(j) FROM xmlcast('11:11:11.5'::time with time zone at time zone 'Europe/Berlin' AS xml) t(j); + j | pg_typeof +---------------+----------- + 19:11:11.5+01 | xml +(1 row) + +-- Convert an XML string to bytea and back to xml +SELECT xmlcast(convert_from(xmlcast('<"foo&bar">'::xml AS bytea),'UTF8')::xml AS text); + xmlcast +------------- + <"foo&bar"> +(1 row) + +SET xmlbinary TO hex; +SELECT xmlcast(E'\\xDEADBEEF'::bytea AS xml); + xmlcast +---------- + DEADBEEF +(1 row) + +SET xmlbinary TO base64; +SELECT xmlcast(E'\\xDEADBEEF'::bytea AS xml); + xmlcast +---------- + 3q2+7w== +(1 row) + +-- The BY REF and BY VALUE clauses are accepted but ignored. +-- This checks if the results are indeed the same as without the clauses. +SELECT + xmlcast('foo' AS xml)::text = xmlcast('foo' AS xml BY REF)::text, + xmlcast('foo' AS xml)::text = xmlcast('foo' AS xml BY VALUE)::text, + xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text BY REF), + xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast(42 AS xml)::text = xmlcast(42 AS xml BY REF)::text, + xmlcast(42 AS xml)::text = xmlcast(42 AS xml BY VALUE)::text, + xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY REF), + xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast(42.73 AS xml)::text = xmlcast(42.73 AS xml BY REF)::text, + xmlcast(42.73 AS xml)::text = xmlcast(42.73 AS xml BY VALUE)::text, + xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS numeric BY REF), + xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS numeric BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('2024-08-14'::date AS xml)::text = xmlcast('2024-08-14'::date AS xml BY REF)::text, + xmlcast('2024-08-14'::date AS xml)::text = xmlcast('2024-08-14'::date AS xml BY VALUE)::text, + xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14'::xml AS date BY REF), + xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14'::xml AS date BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('12:30:45'::time without time zone AS xml)::text = xmlcast('12:30:45'::time without time zone AS xml BY REF)::text, + xmlcast('12:30:45'::time without time zone AS xml)::text = xmlcast('12:30:45'::time without time zone AS xml BY VALUE)::text, + xmlcast('12:30:45'::xml AS time without time zone) = xmlcast('12:30:45'::xml AS time without time zone BY REF), + xmlcast('12:30:45'::xml AS time without time zone) = xmlcast('12:30:45'::xml AS time without time zone BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('09:30:10+06:00'::time with time zone AS xml)::text = xmlcast('09:30:10+06:00'::time with time zone AS xml BY REF)::text, + xmlcast('09:30:10+06:00'::time with time zone AS xml)::text = xmlcast('09:30:10+06:00'::time with time zone AS xml BY VALUE)::text, + xmlcast('09:30:10+06:00'::xml AS time with time zone) = xmlcast('09:30:10+06:00'::xml AS time with time zone BY REF), + xmlcast('09:30:10+06:00'::xml AS time with time zone) = xmlcast('09:30:10+06:00'::xml AS time with time zone BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml)::text = xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml BY REF)::text, + xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml)::text = xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml BY VALUE)::text, + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) = xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone BY REF), + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) = xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +SELECT + xmlcast('1 year 2 mons'::interval AS xml)::text = xmlcast('1 year 2 mons'::interval AS xml BY REF)::text, + xmlcast('1 year 2 mons'::interval AS xml)::text = xmlcast('1 year 2 mons'::interval AS xml BY VALUE)::text, + xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 year 2 mons'::xml AS interval BY REF), + xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 year 2 mons'::xml AS interval BY VALUE); + ?column? | ?column? | ?column? | ?column? +----------+----------+----------+---------- + t | t | t | t +(1 row) + +CREATE VIEW view_xmlcast_to_xml AS +SELECT + xmlcast(NULL AS xml) AS c1, + xmlcast('foo' AS xml) AS c2, + xmlcast(''::text AS xml) AS c3, + xmlcast(NULL::text AS xml) AS c4, + xmlcast(''::xml AS text) AS c5, + xmlcast(NULL::xml AS text) c6, + xmlcast('foo & <"bar">'::text AS xml) AS c7, + xmlcast('foo & <"bar">'::varchar AS xml) AS c8, + xmlcast('foo & <"bar">'::name AS xml) AS c9, + xmlcast(xmltext(E'foo & <"bar">\r') AS text) AS c10, + xmlcast(xmlcast(E'foo & <"bar">\r' AS xml) AS text) AS c11, + xmlcast(to_date('29/05/2024','dd/mm/yyyy') AS xml) AS c12, + xmlcast('2024-05-29 12:04:10.703585+02'::timestamp with time zone at time zone 'Europe/Berlin' AS xml) AS c13, + xmlcast('2024-05-29 12:04:10.703585+02'::timestamp without time zone AS xml) AS c14, + xmlcast('1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval AS xml) AS c15, + xmlcast(427353542 AS xml) AS c16, + xmlcast(4273535420162021 AS xml) AS c17, + xmlcast(42.007312345678910 AS xml) AS c18, + xmlcast(42.007312345678910::double precision AS xml) AS c19, + xmlcast(true AS xml) AS c20, + xmlcast(false AS xml) AS c21, + xmlcast(42 = 73 AS xml) AS c22, + xmlcast(42 <> 73 AS xml) AS c23, + xmlcast('11:11:11.5'::time AS xml) AS c24, + xmlcast('11:11:11.5'::time with time zone at time zone 'Europe/Berlin' AS xml) AS c25; +\sv view_xmlcast_to_xml +CREATE OR REPLACE VIEW public.view_xmlcast_to_xml AS + SELECT XMLCAST(NULL::text AS xml)::xml AS c1, + XMLCAST('foo'::text AS xml)::xml AS c2, + XMLCAST(''::text AS xml)::xml AS c3, + XMLCAST(NULL::text AS xml)::xml AS c4, + XMLCAST(''::xml AS text)::text AS c5, + XMLCAST(NULL::xml AS text)::text AS c6, + XMLCAST('foo & <"bar">'::text AS xml)::xml AS c7, + XMLCAST('foo & <"bar">'::character varying AS xml)::xml AS c8, + XMLCAST('foo & <"bar">'::name::text AS xml)::xml AS c9, + XMLCAST(xmltext('foo & <"bar"> +'::text) AS text)::text AS c10, + XMLCAST(XMLCAST('foo & <"bar"> +'::text AS xml)::xml AS text)::text AS c11, + XMLCAST(to_date('29/05/2024'::text, 'dd/mm/yyyy'::text) AS xml)::xml AS c12, + XMLCAST(('Wed May 29 03:04:10.703585 2024 PDT'::timestamp with time zone AT TIME ZONE 'Europe/Berlin'::text) AS xml)::xml AS c13, + XMLCAST('Wed May 29 12:04:10.703585 2024'::timestamp without time zone AS xml)::xml AS c14, + XMLCAST('@ 1 year 2 mons 3 days 4 hours 5 mins 6 secs'::interval AS xml)::xml AS c15, + XMLCAST(427353542::text AS xml)::xml AS c16, + XMLCAST('4273535420162021'::bigint::text AS xml)::xml AS c17, + XMLCAST(42.007312345678910::text AS xml)::xml AS c18, + XMLCAST(42.007312345678910::double precision::text AS xml)::xml AS c19, + XMLCAST(true AS xml)::xml AS c20, + XMLCAST(false AS xml)::xml AS c21, + XMLCAST(42 = 73 AS xml)::xml AS c22, + XMLCAST(42 <> 73 AS xml)::xml AS c23, + XMLCAST('11:11:11.5'::time without time zone::text AS xml)::xml AS c24, + XMLCAST(('11:11:11.5-07'::time with time zone AT TIME ZONE 'Europe/Berlin'::text)::text AS xml)::xml AS c25 +SELECT * FROM view_xmlcast_to_xml; + c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8 | c9 | c10 | c11 | c12 | c13 | c14 | c15 | c16 | c17 | c18 | c19 | c20 | c21 | c22 | c23 | c24 | c25 +----+-----+----+----+----+----+-----------------------------------+-----------------------------------+-----------------------------------+-----------------+-----------------+------------+----------------------------+----------------------------+----------------+-----------+------------------+--------------------+-------------------+------+-------+-------+------+------------+--------------- + | foo | | | | | foo & <"bar"> | foo & <"bar"> | foo & <"bar"> | foo & <"bar">\r | foo & <"bar">\r | 2024-05-29 | 2024-05-29T12:04:10.703585 | 2024-05-29T12:04:10.703585 | P1Y2M3DT4H5M6S | 427353542 | 4273535420162021 | 42.007312345678910 | 42.00731234567891 | true | false | false | true | 11:11:11.5 | 19:11:11.5+01 +(1 row) + +CREATE VIEW view_xmlcast_from_xml AS +SELECT + xmlcast('P1Y2M3DT4H5M6S'::xml AS interval) AS c1, + xmlcast('1 year 2 mons 3 days 4 hours 5 minutes 6 seconds'::xml AS interval) AS c2, + xmlcast('2002-09-24'::xml AS date) AS c3, + xmlcast('2002-09-24+06:00'::xml AS date) AS c4, + xmlcast('09:30:10Z'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c5, + xmlcast('09:30:10-06:00'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c6, + xmlcast('09:30:10+06:00'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c7, + xmlcast('2002-05-30T09:30:10Z'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c8, + xmlcast('2002-05-30T09:30:10-06:00'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c9, + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c10, + xmlcast('foo bar'::xml AS text) AS c11, + xmlcast(' foo bar '::xml AS varchar) AS c12, + xmlcast('foo & <"bar">'::xml AS text) AS c13, + xmlcast('42.7312345678910'::xml AS numeric) AS c14, + xmlcast('+42.7312345678910'::xml AS numeric) AS c15, + xmlcast('-42.7312345678910'::xml AS numeric) AS c16, + xmlcast('42'::xml AS integer) AS c17, + xmlcast('+42'::xml AS integer) AS c18, + xmlcast('-42'::xml AS integer) AS c19, + xmlcast('4273535420162021'::xml AS bigint) AS c20, + xmlcast('+4273535420162021'::xml AS bigint) AS c21, + xmlcast('-4273535420162021'::xml AS bigint) AS c22, + xmlcast('true'::xml AS boolean) AS c23, + xmlcast('false'::xml AS boolean) AS c24, + xmlcast(''::xml AS character varying) AS c25, + xmlcast(NULL::xml AS character varying) AS c26; +\sv view_xmlcast_from_xml +CREATE OR REPLACE VIEW public.view_xmlcast_from_xml AS + SELECT XMLCAST('P1Y2M3DT4H5M6S'::xml AS interval)::interval AS c1, + XMLCAST('1 year 2 mons 3 days 4 hours 5 minutes 6 seconds'::xml AS interval)::interval AS c2, + XMLCAST('2002-09-24'::xml AS date)::date AS c3, + XMLCAST('2002-09-24+06:00'::xml AS date)::date AS c4, + (XMLCAST('09:30:10Z'::xml AS time with time zone)::time with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c5, + (XMLCAST('09:30:10-06:00'::xml AS time with time zone)::time with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c6, + (XMLCAST('09:30:10+06:00'::xml AS time with time zone)::time with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c7, + (XMLCAST('2002-05-30T09:30:10Z'::xml AS timestamp with time zone)::timestamp with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c8, + (XMLCAST('2002-05-30T09:30:10-06:00'::xml AS timestamp with time zone)::timestamp with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c9, + (XMLCAST('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone)::timestamp with time zone AT TIME ZONE 'Europe/Berlin'::text) AS c10, + XMLCAST('foo bar'::xml AS text)::text AS c11, + XMLCAST(' foo bar '::xml AS character varying)::character varying AS c12, + XMLCAST('foo & <"bar">'::xml AS text)::text AS c13, + XMLCAST('42.7312345678910'::xml AS numeric)::numeric AS c14, + XMLCAST('+42.7312345678910'::xml AS numeric)::numeric AS c15, + XMLCAST('-42.7312345678910'::xml AS numeric)::numeric AS c16, + XMLCAST('42'::xml AS integer)::integer AS c17, + XMLCAST('+42'::xml AS integer)::integer AS c18, + XMLCAST('-42'::xml AS integer)::integer AS c19, + XMLCAST('4273535420162021'::xml AS bigint)::bigint AS c20, + XMLCAST('+4273535420162021'::xml AS bigint)::bigint AS c21, + XMLCAST('-4273535420162021'::xml AS bigint)::bigint AS c22, + XMLCAST('true'::xml AS boolean)::boolean AS c23, + XMLCAST('false'::xml AS boolean)::boolean AS c24, + XMLCAST(''::xml AS character varying)::character varying AS c25, + XMLCAST(NULL::xml AS character varying)::character varying AS c26 +SELECT * FROM view_xmlcast_from_xml; + c1 | c2 | c3 | c4 | c5 | c6 | c7 | c8 | c9 | c10 | c11 | c12 | c13 | c14 | c15 | c16 | c17 | c18 | c19 | c20 | c21 | c22 | c23 | c24 | c25 | c26 +----------------------------------------------+----------------------------------------------+------------+------------+-------------+-------------+-------------+--------------------------+--------------------------+--------------------------+---------+---------------------+---------------+------------------+------------------+-------------------+-----+-----+-----+------------------+------------------+-------------------+-----+-----+-----+----- + @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs | @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs | 09-24-2002 | 09-24-2002 | 10:30:10+01 | 16:30:10+01 | 04:30:10+01 | Thu May 30 11:30:10 2002 | Thu May 30 17:30:10 2002 | Thu May 30 05:30:10 2002 | foo bar | foo bar | foo & <"bar"> | 42.7312345678910 | 42.7312345678910 | -42.7312345678910 | 42 | 42 | -42 | 4273535420162021 | 4273535420162021 | -4273535420162021 | t | f | | +(1 row) + diff --git a/src/test/regress/sql/xml.sql b/src/test/regress/sql/xml.sql index 0ea4f50883..1fae5b4b00 100644 --- a/src/test/regress/sql/xml.sql +++ b/src/test/regress/sql/xml.sql @@ -679,3 +679,281 @@ SELECT xmltext(' '); SELECT xmltext('foo `$_-+?=*^%!|/\()[]{}'); SELECT xmltext('foo & <"bar">'); SELECT xmltext('x'|| '

73

'::xml || .42 || true || 'j'::char); + +-- for xmlcast() tests +INSERT INTO xmltest + VALUES (42, +' + + P1Y2M3DT4H5M6S + 1 year 2 mons 3 days 4 hours 5 minutes 6 seconds + 2002-09-24 + 2002-09-24+06:00 + + 09:30:10Z + 09:30:10-06:00 + 09:30:10+06:00 + 2002-05-30T09:00:00 + 2002-05-30T09:30:10.5 + 2002-05-30T09:30:10Z + 2002-05-30T09:30:10-06:00 + 2002-05-30T09:30:10+06:00 + foo bar + foo bar + foo & <"bar"> + 42.7312345678910 + +42.7312345678910 + -42.7312345678910 + 42 + +42 + -42 + 4273535420162021 + +4273535420162021 + -4273535420162021 + 42 + 73 + + '::xml +); + +-- This prevents the xmlcast regression tests from failing if the system's timezone has been changed. +SET timezone TO 'America/Los_Angeles'; + +-- xmlcast exceptions +\set VERBOSITY terse +SELECT xmlcast((xpath('//text1/text()', data))[1] AS text[]) FROM xmltest WHERE id = 42; +SELECT xmlcast((xpath('//text1/integer1()', data))[1] AS int[]) FROM xmltest WHERE id = 42; +SELECT xmlcast(NULL AS text); +SELECT xmlcast('foo'::text AS varchar); +SELECT xmlcast(42 AS text); +SELECT xmlcast(array['foo','bar'] AS xml); +\set VERBOSITY default + +-- xmlcast tests for "XML to non-XML" expressions +SELECT + xmlcast((xpath('//date1/text()', data))[1] AS date), pg_typeof(xmlcast((xpath('//date1/text()', data))[1] AS date)), + xmlcast((xpath('//date2/text()', data))[1] AS date), pg_typeof(xmlcast((xpath('//date2/text()', data))[1] AS date)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//period1/text()', data))[1] AS interval), pg_typeof(xmlcast((xpath('//period1/text()', data))[1] AS interval)), + xmlcast((xpath('//period2/text()', data))[1] AS interval), pg_typeof(xmlcast((xpath('//period2/text()', data))[1] AS interval)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//time/text()', data))[1] AS time), pg_typeof(xmlcast((xpath('//time/text()', data))[1] AS time)), + xmlcast((xpath('//time_tz1/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz1/text()', data))[1] AS time with time zone)), + xmlcast((xpath('//time_tz2/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz2/text()', data))[1] AS time with time zone)), + xmlcast((xpath('//time_tz3/text()', data))[1] AS time with time zone), pg_typeof(xmlcast((xpath('//time_tz3/text()', data))[1] AS time with time zone)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS text)), + xmlcast((xpath('//text2/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS text)), + xmlcast((xpath('//text3/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS text)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS varchar)), + xmlcast((xpath('//text2/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS varchar)), + xmlcast((xpath('//text3/text()', data))[1] AS varchar), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS varchar)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS name)), + xmlcast((xpath('//text2/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS name)), + xmlcast((xpath('//text3/text()', data))[1] AS name), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS name)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS bpchar)), + xmlcast((xpath('//text2/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS bpchar)), + xmlcast((xpath('//text3/text()', data))[1] AS bpchar), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS bpchar)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//decimal1/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal1/text()', data))[1] AS numeric)), + xmlcast((xpath('//decimal2/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal2/text()', data))[1] AS numeric)), + xmlcast((xpath('//decimal3/text()', data))[1] AS numeric), pg_typeof(xmlcast((xpath('//decimal3/text()', data))[1] AS numeric)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//decimal1/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal1/text()', data))[1] AS double precision)), + xmlcast((xpath('//decimal2/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal2/text()', data))[1] AS double precision)), + xmlcast((xpath('//decimal3/text()', data))[1] AS double precision), pg_typeof(xmlcast((xpath('//decimal3/text()', data))[1] AS double precision)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//integer1/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer1/text()', data))[1] AS int)), + xmlcast((xpath('//integer2/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer2/text()', data))[1] AS int)), + xmlcast((xpath('//integer3/text()', data))[1] AS int), pg_typeof(xmlcast((xpath('//integer3/text()', data))[1] AS int)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//long1/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long1/text()', data))[1] AS bigint)), + xmlcast((xpath('//long2/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long2/text()', data))[1] AS bigint)), + xmlcast((xpath('//long3/text()', data))[1] AS bigint), pg_typeof(xmlcast((xpath('//long3/text()', data))[1] AS bigint)) +FROM xmltest WHERE id = 42; + +SELECT + xmlcast((xpath('//bool1/@att', data))[1] AS boolean), pg_typeof(xmlcast((xpath('//bool1/@att', data))[1] AS boolean)), + xmlcast((xpath('//bool2/@att', data))[1] AS boolean), pg_typeof(xmlcast((xpath('//bool1/@att', data))[1] AS boolean)) +FROM xmltest WHERE id = 42; + +SELECT xmlcast((xpath('//empty/text()', data))[1] AS text), pg_typeof(xmlcast((xpath('//empty/text()', data))[1] AS text)) +FROM xmltest WHERE id = 42; + +-- xmlcast tests for "XML to XML" expressions +SELECT + xmlcast((xpath('//text1/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text1/text()', data))[1] AS xml)), + xmlcast((xpath('//text2/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text2/text()', data))[1] AS xml)), + xmlcast((xpath('//text3/text()', data))[1] AS xml), pg_typeof(xmlcast((xpath('//text3/text()', data))[1] AS xml)) +FROM xmltest WHERE id = 42; + +-- xmlcast tests for "non-XML to XML" expressions +SELECT j, pg_typeof(j) FROM xmlcast(NULL AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('foo' AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(''::text AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(NULL::text AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(''::xml AS text) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(NULL::xml AS text) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::text AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::varchar AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('foo & <"bar">'::name AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(xmltext(E'foo & <"bar">\r') AS text) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(xmlcast(E'foo & <"bar">\r' AS xml) AS text) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(to_date('29/05/2024','dd/mm/yyyy') AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('2024-05-29 12:04:10.703585+02'::timestamp with time zone at time zone 'Europe/Berlin' AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('2024-05-29 12:04:10.703585+02'::timestamp without time zone AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(427353542 AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(4273535420162021 AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(42.007312345678910 AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(42.007312345678910::double precision AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(true AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(false AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(42 = 73 AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast(42 <> 73 AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('11:11:11.5'::time AS xml) t(j); +SELECT j, pg_typeof(j) FROM xmlcast('11:11:11.5'::time with time zone at time zone 'Europe/Berlin' AS xml) t(j); + +-- Convert an XML string to bytea and back to xml +SELECT xmlcast(convert_from(xmlcast('<"foo&bar">'::xml AS bytea),'UTF8')::xml AS text); + +SET xmlbinary TO hex; +SELECT xmlcast(E'\\xDEADBEEF'::bytea AS xml); +SET xmlbinary TO base64; +SELECT xmlcast(E'\\xDEADBEEF'::bytea AS xml); + +-- The BY REF and BY VALUE clauses are accepted but ignored. +-- This checks if the results are indeed the same as without the clauses. +SELECT + xmlcast('foo' AS xml)::text = xmlcast('foo' AS xml BY REF)::text, + xmlcast('foo' AS xml)::text = xmlcast('foo' AS xml BY VALUE)::text, + xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text BY REF), + xmlcast('foo'::xml AS text) = xmlcast('foo'::xml AS text BY VALUE); + +SELECT + xmlcast(42 AS xml)::text = xmlcast(42 AS xml BY REF)::text, + xmlcast(42 AS xml)::text = xmlcast(42 AS xml BY VALUE)::text, + xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY REF), + xmlcast('42'::xml AS int) = xmlcast('42'::xml AS int BY VALUE); + +SELECT + xmlcast(42.73 AS xml)::text = xmlcast(42.73 AS xml BY REF)::text, + xmlcast(42.73 AS xml)::text = xmlcast(42.73 AS xml BY VALUE)::text, + xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS numeric BY REF), + xmlcast('42.73'::xml AS numeric) = xmlcast('42.73'::xml AS numeric BY VALUE); + +SELECT + xmlcast('2024-08-14'::date AS xml)::text = xmlcast('2024-08-14'::date AS xml BY REF)::text, + xmlcast('2024-08-14'::date AS xml)::text = xmlcast('2024-08-14'::date AS xml BY VALUE)::text, + xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14'::xml AS date BY REF), + xmlcast('2024-08-14'::xml AS date) = xmlcast('2024-08-14'::xml AS date BY VALUE); + +SELECT + xmlcast('12:30:45'::time without time zone AS xml)::text = xmlcast('12:30:45'::time without time zone AS xml BY REF)::text, + xmlcast('12:30:45'::time without time zone AS xml)::text = xmlcast('12:30:45'::time without time zone AS xml BY VALUE)::text, + xmlcast('12:30:45'::xml AS time without time zone) = xmlcast('12:30:45'::xml AS time without time zone BY REF), + xmlcast('12:30:45'::xml AS time without time zone) = xmlcast('12:30:45'::xml AS time without time zone BY VALUE); + +SELECT + xmlcast('09:30:10+06:00'::time with time zone AS xml)::text = xmlcast('09:30:10+06:00'::time with time zone AS xml BY REF)::text, + xmlcast('09:30:10+06:00'::time with time zone AS xml)::text = xmlcast('09:30:10+06:00'::time with time zone AS xml BY VALUE)::text, + xmlcast('09:30:10+06:00'::xml AS time with time zone) = xmlcast('09:30:10+06:00'::xml AS time with time zone BY REF), + xmlcast('09:30:10+06:00'::xml AS time with time zone) = xmlcast('09:30:10+06:00'::xml AS time with time zone BY VALUE); + +SELECT + xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml)::text = xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml BY REF)::text, + xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml)::text = xmlcast('2002-05-30 09:30:10+06:00'::timestamp with time zone AS xml BY VALUE)::text, + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) = xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone BY REF), + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) = xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone BY VALUE); + +SELECT + xmlcast('1 year 2 mons'::interval AS xml)::text = xmlcast('1 year 2 mons'::interval AS xml BY REF)::text, + xmlcast('1 year 2 mons'::interval AS xml)::text = xmlcast('1 year 2 mons'::interval AS xml BY VALUE)::text, + xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 year 2 mons'::xml AS interval BY REF), + xmlcast('1 year 2 mons'::xml AS interval) = xmlcast('1 year 2 mons'::xml AS interval BY VALUE); + +CREATE VIEW view_xmlcast_to_xml AS +SELECT + xmlcast(NULL AS xml) AS c1, + xmlcast('foo' AS xml) AS c2, + xmlcast(''::text AS xml) AS c3, + xmlcast(NULL::text AS xml) AS c4, + xmlcast(''::xml AS text) AS c5, + xmlcast(NULL::xml AS text) c6, + xmlcast('foo & <"bar">'::text AS xml) AS c7, + xmlcast('foo & <"bar">'::varchar AS xml) AS c8, + xmlcast('foo & <"bar">'::name AS xml) AS c9, + xmlcast(xmltext(E'foo & <"bar">\r') AS text) AS c10, + xmlcast(xmlcast(E'foo & <"bar">\r' AS xml) AS text) AS c11, + xmlcast(to_date('29/05/2024','dd/mm/yyyy') AS xml) AS c12, + xmlcast('2024-05-29 12:04:10.703585+02'::timestamp with time zone at time zone 'Europe/Berlin' AS xml) AS c13, + xmlcast('2024-05-29 12:04:10.703585+02'::timestamp without time zone AS xml) AS c14, + xmlcast('1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval AS xml) AS c15, + xmlcast(427353542 AS xml) AS c16, + xmlcast(4273535420162021 AS xml) AS c17, + xmlcast(42.007312345678910 AS xml) AS c18, + xmlcast(42.007312345678910::double precision AS xml) AS c19, + xmlcast(true AS xml) AS c20, + xmlcast(false AS xml) AS c21, + xmlcast(42 = 73 AS xml) AS c22, + xmlcast(42 <> 73 AS xml) AS c23, + xmlcast('11:11:11.5'::time AS xml) AS c24, + xmlcast('11:11:11.5'::time with time zone at time zone 'Europe/Berlin' AS xml) AS c25; + +\sv view_xmlcast_to_xml +SELECT * FROM view_xmlcast_to_xml; + +CREATE VIEW view_xmlcast_from_xml AS +SELECT + xmlcast('P1Y2M3DT4H5M6S'::xml AS interval) AS c1, + xmlcast('1 year 2 mons 3 days 4 hours 5 minutes 6 seconds'::xml AS interval) AS c2, + xmlcast('2002-09-24'::xml AS date) AS c3, + xmlcast('2002-09-24+06:00'::xml AS date) AS c4, + xmlcast('09:30:10Z'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c5, + xmlcast('09:30:10-06:00'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c6, + xmlcast('09:30:10+06:00'::xml AS time with time zone) at time zone 'Europe/Berlin' AS c7, + xmlcast('2002-05-30T09:30:10Z'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c8, + xmlcast('2002-05-30T09:30:10-06:00'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c9, + xmlcast('2002-05-30T09:30:10+06:00'::xml AS timestamp with time zone) at time zone 'Europe/Berlin' AS c10, + xmlcast('foo bar'::xml AS text) AS c11, + xmlcast(' foo bar '::xml AS varchar) AS c12, + xmlcast('foo & <"bar">'::xml AS text) AS c13, + xmlcast('42.7312345678910'::xml AS numeric) AS c14, + xmlcast('+42.7312345678910'::xml AS numeric) AS c15, + xmlcast('-42.7312345678910'::xml AS numeric) AS c16, + xmlcast('42'::xml AS integer) AS c17, + xmlcast('+42'::xml AS integer) AS c18, + xmlcast('-42'::xml AS integer) AS c19, + xmlcast('4273535420162021'::xml AS bigint) AS c20, + xmlcast('+4273535420162021'::xml AS bigint) AS c21, + xmlcast('-4273535420162021'::xml AS bigint) AS c22, + xmlcast('true'::xml AS boolean) AS c23, + xmlcast('false'::xml AS boolean) AS c24, + xmlcast(''::xml AS character varying) AS c25, + xmlcast(NULL::xml AS character varying) AS c26; + +\sv view_xmlcast_from_xml +SELECT * FROM view_xmlcast_from_xml; \ No newline at end of file diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list index 43fe3bcd59..2e481cd8d7 100644 --- a/src/tools/pgindent/typedefs.list +++ b/src/tools/pgindent/typedefs.list @@ -3383,6 +3383,7 @@ XidStatus XmlExpr XmlExprOp XmlOptionType +XmlCast XmlSerialize XmlTableBuilderData YYLTYPE -- 2.43.0