database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-09 22:41:56 +03:00
Code Activity

Repair interaction between IN-join processing and subselect pullup that

Browse Source 
I inadvertently broke a few days ago (per report from Sean Thomas).
Add regression test case to try to catch any similar breakage in future.
This commit is contained in:
Tom Lane
2003-10-18 16:52:15 +00:00
parent c02036b1d8
commit eda80f09ff
3 changed files with 63 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/backend/optimizer/plan/subselect.c
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/subselect.c,v 1.82 2003/08/08 21:41:51 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/subselect.c,v 1.83 2003/10/18 16:52:15 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -493,8 +493,8 @@ make_subplan(SubLink *slink, List *lefthand, bool isTopQual)
* If rtindex is 0, we build Params to represent the sub-select outputs.
* The paramids of the Params created are returned in the *righthandIds list.
*
* If rtindex is not 0, we build Vars using that rtindex as varno. The
* Vars themselves are returned in *righthandIds (this is a bit of a type
* If rtindex is not 0, we build Vars using that rtindex as varno. Copies
* of the Var nodes are returned in *righthandIds (this is a bit of a type
* cheat, but we can get away with it).
*/
static List *
@ -525,8 +525,11 @@ convert_sublink_opers(List *lefthand, List *operOids,
te->resdom->restype,
te->resdom->restypmod,
0);
/* Record it for caller */
*righthandIds = lappend(*righthandIds, rightop);
/*
* Copy it for caller. NB: we need a copy to avoid having
* doubly-linked substructure in the modified parse tree.
*/
*righthandIds = lappend(*righthandIds, copyObject(rightop));
}
else
{
@ -735,7 +738,7 @@ convert_IN_to_join(Query *parse, SubLink *sublink)
/*
* Build the result qual expressions. As a side effect,
* ininfo->sub_targetlist is filled with a list of the Vars
* ininfo->sub_targetlist is filled with a list of Vars
* representing the subselect outputs.
*/
exprs = convert_sublink_opers(sublink->lefthand,