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

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 >.

1 files changed, 34 insertions, 1 deletions

diff --git a/src/backend/nodes/makefuncs.c b/src/backend/nodes/makefuncs.c
index 6d649ba9d1f..65f4ffcca37 100644
--- a/src/backend/nodes/makefuncs.c
+++ b/src/backend/nodes/makefuncs.c
@@ -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"
 
@@ -17,6 +17,39 @@
 
 
 /*
+ * 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
  */