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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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35
src/backend/nodes/makefuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/makefuncs.c,v 1.30 2002/03/29 19:06:09 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/makefuncs.c,v 1.31 2002/04/16 23:08:10 tgl Exp $
*/
#include "postgres.h"
@ -16,6 +16,39 @@
#include "utils/lsyscache.h"
/*
* makeA_Expr -
* makes an A_Expr node
*/
A_Expr *
makeA_Expr(int oper, List *name, Node *lexpr, Node *rexpr)
{
A_Expr *a = makeNode(A_Expr);
a->oper = oper;
a->name = name;
a->lexpr = lexpr;
a->rexpr = rexpr;
return a;
}
/*
* makeSimpleA_Expr -
* As above, given a simple (unqualified) operator name
*/
A_Expr *
makeSimpleA_Expr(int oper, const char *name,
Node *lexpr, Node *rexpr)
{
A_Expr *a = makeNode(A_Expr);
a->oper = oper;
a->name = makeList1(makeString((char *) name));
a->lexpr = lexpr;
a->rexpr = rexpr;
return a;
}
/*
* makeOper -
* creates an Oper node