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Operators live in namespaces. CREATE/DROP/COMMENT ON OPERATOR take

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qualified operator names directly, for example CREATE OPERATOR myschema.+
( ... ).  To qualify an operator name in an expression you need to write
OPERATOR(myschema.+) (thanks to Peter for suggesting an escape hatch).
I also took advantage of having to reformat pg_operator to fix something
that'd been bugging me for a while: mergejoinable operators should have
explicit links to the associated cross-data-type comparison operators,
rather than hardwiring an assumption that they are named < and >.
This commit is contained in:
Tom Lane
2002-04-16 23:08:12 +00:00
parent 4da51bfd6d
commit 6cef5d2549
39 changed files with 1953 additions and 1803 deletions
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22
src/backend/utils/adt/ri_triggers.c
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@ -18,7 +18,7 @@
* Portions Copyright (c) 2000-2001, PostgreSQL Global Development Group
* Copyright 1999 Jan Wieck
*
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.36 2002/04/02 01:03:07 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.37 2002/04/16 23:08:11 tgl Exp $
*
* ----------
*/
@ -36,6 +36,7 @@
#include "catalog/pg_operator.h"
#include "commands/trigger.h"
#include "executor/spi_priv.h"
#include "parser/parse_oper.h"
#include "utils/lsyscache.h"
#include "miscadmin.h"
@ -3338,27 +3339,20 @@ ri_AttributesEqual(Oid typeid, Datum oldvalue, Datum newvalue)
HASH_FIND, NULL);
/*
* If not found, lookup the OPERNAME system cache for it to get the
* func OID, then do the function manager lookup, and remember that
* info.
* If not found, lookup the operator, then do the function manager
* lookup, and remember that info.
*/
if (!entry)
{
HeapTuple opr_tup;
Oid opr_proc;
FmgrInfo finfo;
opr_tup = SearchSysCache(OPERNAME,
PointerGetDatum("="),
ObjectIdGetDatum(typeid),
ObjectIdGetDatum(typeid),
CharGetDatum('b'));
if (!HeapTupleIsValid(opr_tup))
opr_proc = compatible_oper_funcid(makeList1(makeString("=")),
typeid, typeid, true);
if (!OidIsValid(opr_proc))
elog(ERROR,
"ri_AttributesEqual(): cannot find '=' operator for type %u",
"ri_AttributesEqual(): cannot find '=' operator for type %u",
typeid);
opr_proc = ((Form_pg_operator) GETSTRUCT(opr_tup))->oprcode;
ReleaseSysCache(opr_tup);
/*
* Since fmgr_info could fail, call it *before* creating the