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DROP ... IF EXISTS for the following cases:

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language, tablespace, trigger, rule, opclass, function, aggregate. operator, and cast.
This commit is contained in:
Andrew Dunstan
2006-06-16 20:23:45 +00:00
parent e79cc2db00
commit bbcd01692b
15 changed files with 271 additions and 58 deletions
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39
src/backend/commands/opclasscmds.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/opclasscmds.c,v 1.45 2006/05/02 22:25:10 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/opclasscmds.c,v 1.46 2006/06/16 20:23:44 adunstan Exp $
*
*-------------------------------------------------------------------------
*/
@ -700,21 +700,40 @@ RemoveOpClass(RemoveOpClassStmt *stmt)
/* Unqualified opclass name, so search the search path */
opcID = OpclassnameGetOpcid(amID, opcname);
if (!OidIsValid(opcID))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("operator class \"%s\" does not exist for access method \"%s\"",
opcname, stmt->amname)));
{
if (! stmt -> missing_ok )
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("operator class \"%s\" does not exist for access method \"%s\"",
opcname, stmt->amname)));
else
ereport(NOTICE,
(errmsg("operator class \"%s\" does not exist for access method \"%s\"",
opcname, stmt->amname)));
return;
}
tuple = SearchSysCache(CLAOID,
ObjectIdGetDatum(opcID),
0, 0, 0);
}
if (!HeapTupleIsValid(tuple))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("operator class \"%s\" does not exist for access method \"%s\"",
NameListToString(stmt->opclassname), stmt->amname)));
{
if (! stmt->missing_ok )
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("operator class \"%s\" does not exist for access method \"%s\"",
NameListToString(stmt->opclassname), stmt->amname)));
else
ereport(NOTICE,
(errmsg("operator class \"%s\" does not exist for access method \"%s\"",
NameListToString(stmt->opclassname), stmt->amname)));
return;
}
opcID = HeapTupleGetOid(tuple);
/* Permission check: must own opclass or its namespace */