pgsql-server/ oc/src/sgml/catalogs.sgml oc/src ...

CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: tgl(at)postgresql(dot)org 02/09/18 17:35:25

Modified files:
doc/src/sgml : catalogs.sgml datatype.sgml release.sgml
typeconv.sgml
doc/src/sgml/ref: create_cast.sgml
src/backend/catalog: heap.c pg_aggregate.c pg_proc.c
src/backend/commands: functioncmds.c indexcmds.c
src/backend/executor: nodeAgg.c
src/backend/nodes: copyfuncs.c equalfuncs.c makefuncs.c
outfuncs.c readfuncs.c
src/backend/optimizer/path: indxpath.c pathkeys.c
src/backend/optimizer/plan: createplan.c
src/backend/optimizer/prep: preptlist.c prepunion.c
src/backend/parser: analyze.c gram.y keywords.c parse_clause.c
parse_coerce.c parse_expr.c parse_func.c
parse_node.c parse_oper.c parse_target.c
src/backend/rewrite: rewriteHandler.c
src/backend/utils/adt: arrayfuncs.c int8.c numeric.c regproc.c
ruleutils.c varbit.c varchar.c
src/backend/utils/cache: lsyscache.c
src/bin/initdb : initdb.sh
src/bin/pg_dump: pg_dump.c
src/include/catalog: catversion.h pg_cast.h pg_operator.h
pg_proc.h
src/include/nodes: makefuncs.h parsenodes.h primnodes.h
src/include/parser: parse_coerce.h parse_node.h parse_target.h
src/include/utils: array.h builtins.h int8.h lsyscache.h
varbit.h
src/test/regress/expected: domain.out
horology-no-DST-before-1970.out
horology-solaris-1947.out
horology.out opr_sanity.out
prepare.out rules.out strings.out
union.out
src/test/regress/sql: domain.sql horology.sql opr_sanity.sql
strings.sql

Log message:
Extend pg_cast castimplicit column to a three-way value; this allows us
to be flexible about assignment casts without introducing ambiguity in
operator/function resolution. Introduce a well-defined promotion hierarchy
for numeric datatypes (int2->int4->int8->numeric->float4->float8).
Change make_const to initially label numeric literals as int4, int8, or
numeric (never float8 anymore).
Explicitly mark Func and RelabelType nodes to indicate whether they came
from a function call, explicit cast, or implicit cast; use this to do
reverse-listing more accurately and without so many heuristics.
Explicit casts to char, varchar, bit, varbit will truncate or pad without
raising an error (the pre-7.2 behavior), while assigning to a column without
any explicit cast will still raise an error for wrong-length data like 7.3.
This more nearly follows the SQL spec than 7.2 behavior (we should be
reporting a 'completion condition' in the explicit-cast cases, but we have
no mechanism for that, so just do silent truncation).
Fix some problems with enforcement of typmod for array elements;
it didn't work at all in 'UPDATE ... SET array[n] = foo', for example.
Provide a generalized array_length_coerce() function to replace the
specialized per-array-type functions that used to be needed (and were
missing for NUMERIC as well as all the datetime types).
Add missing conversions int8<->float4, text<->numeric, oid<->int8.
initdb forced.