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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/optimizer/path/pathkeys.c
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@ -11,7 +11,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/pathkeys.c,v 1.37 2002/03/12 00:51:44 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/pathkeys.c,v 1.38 2002/05/12 23:43:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -518,7 +518,8 @@ build_index_pathkeys(Query *root,
List *funcargs = NIL;
funcnode->funcid = index->indproc;
funcnode->functype = get_func_rettype(index->indproc);
funcnode->funcresulttype = get_func_rettype(index->indproc);
funcnode->funcretset = false; /* can never be a set */
funcnode->func_fcache = NULL;
while (*indexkeys != 0)