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Fix psql to cope with autocommit off, at least during startup.

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Behavior of backslash commands (especially for large objects)
may still require some thought.
This commit is contained in:
Tom Lane
2002-10-15 02:24:16 +00:00
parent e258a2b436
commit 951ec872c7
6 changed files with 78 additions and 54 deletions
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12
src/bin/psql/command.c
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@ -3,7 +3,7 @@
*
* Copyright 2000-2002 by PostgreSQL Global Development Group
*
* $Header: /cvsroot/pgsql/src/bin/psql/command.c,v 1.82 2002/10/03 17:09:41 momjian Exp $
* $Header: /cvsroot/pgsql/src/bin/psql/command.c,v 1.83 2002/10/15 02:24:15 tgl Exp $
*/
#include "postgres_fe.h"
#include "command.h"
@ -1464,13 +1464,17 @@ test_superuser(const char *username)
if (!username)
return false;
/*
* Use begin/commit to avoid starting a transaction block if server
* has autocommit off by default.
*/
initPQExpBuffer(&buf);
printfPQExpBuffer(&buf, "SELECT usesuper FROM pg_catalog.pg_user WHERE usename = '%s'", username);
res = PSQLexec(buf.data);
printfPQExpBuffer(&buf, "BEGIN; SELECT usesuper FROM pg_catalog.pg_user WHERE usename = '%s'; COMMIT", username);
res = PSQLexec(buf.data, true);
termPQExpBuffer(&buf);
answer =
(PQntuples(res) > 0 && PQnfields(res) > 0
(res && PQntuples(res) > 0 && PQnfields(res) > 0
&& !PQgetisnull(res, 0, 0)
&& PQgetvalue(res, 0, 0)
&& strcmp(PQgetvalue(res, 0, 0), "t") == 0);