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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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17
src/backend/parser/parse_node.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.61 2002/04/11 20:00:01 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.62 2002/04/16 23:08:11 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -62,10 +62,7 @@ make_parsestate(ParseState *parentParseState)
* Ensure argument type match by forcing conversion of constants.
*/
Node *
make_operand(char *opname,
Node *tree,
Oid orig_typeId,
Oid target_typeId)
make_operand(Node *tree, Oid orig_typeId, Oid target_typeId)
{
Node *result;
@ -95,7 +92,7 @@ make_operand(char *opname,
* This is where some type conversion happens.
*/
Expr *
make_op(char *opname, Node *ltree, Node *rtree)
make_op(List *opname, Node *ltree, Node *rtree)
{
Oid ltypeId,
rtypeId;
@ -114,7 +111,7 @@ make_op(char *opname, Node *ltree, Node *rtree)
{
tup = right_oper(opname, ltypeId);
opform = (Form_pg_operator) GETSTRUCT(tup);
left = make_operand(opname, ltree, ltypeId, opform->oprleft);
left = make_operand(ltree, ltypeId, opform->oprleft);
right = NULL;
}
@ -123,7 +120,7 @@ make_op(char *opname, Node *ltree, Node *rtree)
{
tup = left_oper(opname, rtypeId);
opform = (Form_pg_operator) GETSTRUCT(tup);
right = make_operand(opname, rtree, rtypeId, opform->oprright);
right = make_operand(rtree, rtypeId, opform->oprright);
left = NULL;
}
@ -132,8 +129,8 @@ make_op(char *opname, Node *ltree, Node *rtree)
{
tup = oper(opname, ltypeId, rtypeId, false);
opform = (Form_pg_operator) GETSTRUCT(tup);
left = make_operand(opname, ltree, ltypeId, opform->oprleft);
right = make_operand(opname, rtree, rtypeId, opform->oprright);
left = make_operand(ltree, ltypeId, opform->oprleft);
right = make_operand(rtree, rtypeId, opform->oprright);
}
newop = makeOper(oprid(tup), /* opno */