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create_unique_plan() should not discard existing output columns of the

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subplan it starts with, as they may be needed at upper join levels.
See comments added to code for the non-obvious reason why.  Per bug report
from Robert Creager.
This commit is contained in:
Tom Lane
2003-08-07 19:20:24 +00:00
parent d862045dfc
commit ecbed6e1b9
5 changed files with 94 additions and 37 deletions
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7
src/backend/parser/parse_clause.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_clause.c,v 1.120 2003/08/04 02:40:01 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_clause.c,v 1.121 2003/08/07 19:20:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -59,9 +59,6 @@ static Node *buildMergedJoinVar(ParseState *pstate, JoinType jointype,
Var *l_colvar, Var *r_colvar);
static TargetEntry *findTargetlistEntry(ParseState *pstate, Node *node,
List *tlist, int clause);
static List *addTargetToSortList(ParseState *pstate, TargetEntry *tle,
List *sortlist, List *targetlist,
List *opname, bool resolveUnknown);
/*
@ -1478,7 +1475,7 @@ addAllTargetsToSortList(ParseState *pstate, List *sortlist,
*
* Returns the updated ORDER BY list.
*/
static List *
List *
addTargetToSortList(ParseState *pstate, TargetEntry *tle,
List *sortlist, List *targetlist,
List *opname, bool resolveUnknown)