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Get rid of long-since-vestigial Iter node type, in favor of adding a

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returns-set boolean field in Func and Oper nodes.  This allows cleaner,
more reliable tests for expressions returning sets in the planner and
parser.  For example, a WHERE clause returning a set is now detected
and complained of in the parser, not only at runtime.
This commit is contained in:
Tom Lane
2002-05-12 23:43:04 +00:00
parent f9e4f611a1
commit 3389a110d4
33 changed files with 297 additions and 676 deletions
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5
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 1.64 2002/05/01 19:26:07 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.65 2002/05/12 23:43:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -135,7 +135,8 @@ make_op(List *opname, Node *ltree, Node *rtree)
newop = makeOper(oprid(tup), /* opno */
InvalidOid, /* opid */
opform->oprresult); /* operator result type */
opform->oprresult, /* opresulttype */
get_func_retset(opform->oprcode)); /* opretset */
result = makeNode(Expr);
result->typeOid = opform->oprresult;