psqlODBC suggestions

Several weeks ago, I sent a message to this list (included below).

I would appreciate it if someone on this list would acknowledge
that the message was received.

Thank you,

Robert Willis

From: Robert Willis
Sent: Monday, July 03, 2023 1:20 PM
To: pgsql-odbc(at)postgresql(dot)org
Subject: ODBC driver changes

To Whom It May Concern:

Please consider making the following changes to the psqlODBC driver.
Items 1 through 3 (the VARBIT and JSON-related changes) should be
non-controversial – I just think someone forgot to put them in the code.

1. In pgtypes.h, please add these definitions:
#define PG_TYPE_JSON 114
#define PG_TYPE_VARBIT 1562

You might also consider adding this if it is correct:
#define PG_TYPE_JSONB 3802

1. In info.c, add this line immediately after the line containing the
only occurrence of PG_TYPE_BIT and right before the “break” line in the file:
case PG_TYPE_VARBIT:

1. In columninfo.c, add these lines immediately after the line containing the

only occurrence of PG_TYPE_TIME_WITH_TMZONE and right before the “break”

line in the file:

case PG_TYPE_BIT:

case PG_TYPE_VARBIT:

1. In info.c, in the function PGAPI_ProcedureColumns() at line 5121 (in the version
15.00 sources) the following code is added to the query to restrict the answer
to executable items:
appendPQExpBuffer(&proc_query,
" has_function_privilege(p.oid, 'EXECUTE')");
I suggest changing this to the following In order to truly make the function return info about actual procedures:
appendPQExpBuffer(&proc_query,
" p.prokind = 'p' and"
" has_function_privilege(p.oid, 'EXECUTE')");

1. In configure, line 5016 (in the version 15.00 sources) has this:
CPPFLAGS="$CPPFLAGS -I$with_libpq/include - I$with_libpq/include/postgresql/internal"
I think that really ought to be this:
CPPFLAGS="$CPPFLAGS -I$with_libpq/include -I$with_libpq/include/internal"

1. In connection.c, I think you should make this change. The comment explains my reasoning.

Change these lines from:

appendPQExpBufferStr(&query_buf, query);

if (appendq)

{

appendPQExpBuffer(&query_buf, ";%s", appendq);

}

if (query_rollback)

{

appendPQExpBuffer(&query_buf, ";%s %s", rlscmd, per_query_svp);

}

to:

appendPQExpBufferStr(&query_buf, query);

/* prepend newline too, in case user SQL ends in a */

/* dash-dash comment without a final newline character. Otherwise, */

/* the appended SQL statement gets treated as part of the comment. */

if (appendq)

{

appendPQExpBuffer(&query_buf, "\n;%s", appendq);

}

if (query_rollback)

{

appendPQExpBuffer(&query_buf, "\n;%s %s", rlscmd, per_query_svp);

}

1. In odbcapi30.c, in SQLEndTran(), I think it should return SQL_ERROR if the connection is NOT in auto-commit mode.

Thus, in the SQL_HANDLE_DBC case inside that function, these two lines:

CC_clear_error((ConnectionClass *) Handle);

ret = PGAPI_Transact(SQL_NULL_HENV, Handle, CompletionType);

should be:

if (((ConnectionClass *)Handle)->__error_number == CONNECTION_SERVER_REPORTED_SEVERITY_FATAL

&& (CC_loves_visible_trans( (ConnectionClass *)Handle )) )

ret = SQL_ERROR;
else

{

CC_clear_error((ConnectionClass *) Handle);

ret = PGAPI_Transact(SQL_NULL_HENV, Handle, CompletionType);

}

I would be interested in getting your opinion on my suggestions, and hope the changes merit inclusion in the next release.

Sincerely,

Robert Willis

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