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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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12
src/backend/parser/analyze.c
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.229 2002/04/12 19:11:49 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.230 2002/04/16 23:08:11 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1460,11 +1460,13 @@ transformFKConstraints(ParseState *pstate, CreateStmtContext *cxt)
{
/*
* fktypoid[i] is the foreign key table's i'th element's type
* oid pktypoid[i] is the primary key table's i'th element's
* type oid We let oper() do our work for us, including
* elog(ERROR) if the types don't compare with =
* pktypoid[i] is the primary key table's i'th element's type
*
* We let oper() do our work for us, including elog(ERROR) if
* the types don't compare with =
*/
Operator o = oper("=", fktypoid[i], pktypoid[i], false);
Operator o = oper(makeList1(makeString("=")),
fktypoid[i], pktypoid[i], false);
ReleaseSysCache(o);
}