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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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3
src/include/utils/lsyscache.h
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@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: lsyscache.h,v 1.51 2002/04/30 01:26:26 tgl Exp $
* $Id: lsyscache.h,v 1.52 2002/05/12 23:43:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -39,6 +39,7 @@ extern RegProcedure get_oprrest(Oid opno);
extern RegProcedure get_oprjoin(Oid opno);
extern char *get_func_name(Oid funcid);
extern Oid get_func_rettype(Oid funcid);
extern bool get_func_retset(Oid funcid);
extern char func_volatile(Oid funcid);
extern Oid get_relname_relid(const char *relname, Oid relnamespace);
extern char *get_rel_name(Oid relid);