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libpq's query to get the OIDs of large-object support functions was not

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schema-safe.  Make it so, and improve the internal support for knowledge
of server version.
This commit is contained in:
Tom Lane
2004-03-05 01:53:59 +00:00
parent d91acf8401
commit 44611f6e6d
4 changed files with 58 additions and 21 deletions
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11
src/interfaces/libpq/fe-protocol2.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-protocol2.c,v 1.9 2003/11/29 19:52:12 pgsql Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-protocol2.c,v 1.10 2004/03/05 01:53:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -178,7 +178,9 @@ pqSetenvPoll(PGconn *conn)
* default in a 7.3 server.
*
* Note: version() exists in all
* protocol-2.0-supporting backends.
* protocol-2.0-supporting backends. In 7.3 it would
* be safer to write pg_catalog.version(), but we can't
* do that without causing problems on older versions.
*/
if (!PQsendQuery(conn, "begin; select version(); end"))
goto error_return;
@ -258,8 +260,9 @@ pqSetenvPoll(PGconn *conn)
* in 7.3 servers where we need to prevent
* autocommit-off from starting a transaction anyway.
*/
if (strncmp(conn->sversion, "7.3", 3) == 0)
query = "begin; select pg_client_encoding(); end";
if (conn->sversion >= 70300 &&
conn->sversion < 70400)
query = "begin; select pg_catalog.pg_client_encoding(); end";
else
query = "select pg_client_encoding()";
if (!PQsendQuery(conn, query))