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Commite64bb65

Browse files
committed
Fix GetCTEForRTE() to deal with the possibility that the RTE it's given came
from a query level above the current ParseState.
1 parent5f853c6 commite64bb65

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4 files changed

+23
-12
lines changed

4 files changed

+23
-12
lines changed

‎src/backend/parser/analyze.c‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -17,7 +17,7 @@
1717
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
1818
* Portions Copyright (c) 1994, Regents of the University of California
1919
*
20-
*$PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.380 2008/10/04 21:56:54 tgl Exp $
20+
*$PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.381 2008/10/06 15:15:22 tgl Exp $
2121
*
2222
*-------------------------------------------------------------------------
2323
*/
@@ -1896,7 +1896,7 @@ transformLockingClause(ParseState *pstate, Query *qry, LockingClause *lc)
18961896
ereport(ERROR,
18971897
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
18981898
errmsg("SELECT FOR UPDATE/SHARE cannot be applied to an outer-level WITH query")));
1899-
cte=GetCTEForRTE(pstate,rte);
1899+
cte=GetCTEForRTE(pstate,rte,-1);
19001900
/* should be analyzed by now */
19011901
Assert(IsA(cte->ctequery,Query));
19021902
transformLockingClause(pstate,
@@ -1989,7 +1989,7 @@ transformLockingClause(ParseState *pstate, Query *qry, LockingClause *lc)
19891989
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
19901990
errmsg("SELECT FOR UPDATE/SHARE cannot be applied to an outer-level WITH query"),
19911991
parser_errposition(pstate,thisrel->location)));
1992-
cte=GetCTEForRTE(pstate,rte);
1992+
cte=GetCTEForRTE(pstate,rte,-1);
19931993
/* should be analyzed by now */
19941994
Assert(IsA(cte->ctequery,Query));
19951995
transformLockingClause(pstate,

‎src/backend/parser/parse_relation.c‎

Lines changed: 11 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/parser/parse_relation.c,v 1.137 2008/10/0602:12:56 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/parser/parse_relation.c,v 1.138 2008/10/0615:15:22 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -371,15 +371,23 @@ GetRTEByRangeTablePosn(ParseState *pstate,
371371

372372
/*
373373
* Fetch the CTE for a CTE-reference RTE.
374+
*
375+
* rtelevelsup is the number of query levels above the given pstate that the
376+
* RTE came from. Callers that don't have this information readily available
377+
* may pass -1 instead.
374378
*/
375379
CommonTableExpr*
376-
GetCTEForRTE(ParseState*pstate,RangeTblEntry*rte)
380+
GetCTEForRTE(ParseState*pstate,RangeTblEntry*rte,intrtelevelsup)
377381
{
378382
Indexlevelsup;
379383
ListCell*lc;
380384

385+
/* Determine RTE's levelsup if caller didn't know it */
386+
if (rtelevelsup<0)
387+
(void)RTERangeTablePosn(pstate,rte,&rtelevelsup);
388+
381389
Assert(rte->rtekind==RTE_CTE);
382-
levelsup=rte->ctelevelsup;
390+
levelsup=rte->ctelevelsup+rtelevelsup;
383391
while (levelsup-->0)
384392
{
385393
pstate=pstate->parentParseState;

‎src/backend/parser/parse_target.c‎

Lines changed: 6 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/parser/parse_target.c,v 1.166 2008/10/05 22:20:16 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/parser/parse_target.c,v 1.167 2008/10/06 15:15:22 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -308,7 +308,7 @@ markTargetListOrigin(ParseState *pstate, TargetEntry *tle,
308308
*/
309309
if (attnum!=InvalidAttrNumber&& !rte->self_reference)
310310
{
311-
CommonTableExpr*cte=GetCTEForRTE(pstate,rte);
311+
CommonTableExpr*cte=GetCTEForRTE(pstate,rte,netlevelsup);
312312
TargetEntry*ste;
313313

314314
/* should be analyzed by now */
@@ -1206,7 +1206,7 @@ expandRecordVariable(ParseState *pstate, Var *var, int levelsup)
12061206
/* CTE reference: examine subquery's output expr */
12071207
if (!rte->self_reference)
12081208
{
1209-
CommonTableExpr*cte=GetCTEForRTE(pstate,rte);
1209+
CommonTableExpr*cte=GetCTEForRTE(pstate,rte,netlevelsup);
12101210
TargetEntry*ste;
12111211

12121212
/* should be analyzed by now */
@@ -1230,7 +1230,9 @@ expandRecordVariable(ParseState *pstate, Var *var, int levelsup)
12301230

12311231
MemSet(&mypstate,0,sizeof(mypstate));
12321232
/* this loop must work, since GetCTEForRTE did */
1233-
for (levelsup=0;levelsup<rte->ctelevelsup;levelsup++)
1233+
for (levelsup=0;
1234+
levelsup<rte->ctelevelsup+netlevelsup;
1235+
levelsup++)
12341236
pstate=pstate->parentParseState;
12351237
mypstate.parentParseState=pstate;
12361238
mypstate.p_rtable= ((Query*)cte->ctequery)->rtable;

‎src/include/parser/parse_relation.h‎

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $PostgreSQL: pgsql/src/include/parser/parse_relation.h,v 1.60 2008/10/0602:12:56 tgl Exp $
10+
* $PostgreSQL: pgsql/src/include/parser/parse_relation.h,v 1.61 2008/10/0615:15:22 tgl Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -34,7 +34,8 @@ extern int RTERangeTablePosn(ParseState *pstate,
3434
externRangeTblEntry*GetRTEByRangeTablePosn(ParseState*pstate,
3535
intvarno,
3636
intsublevels_up);
37-
externCommonTableExpr*GetCTEForRTE(ParseState*pstate,RangeTblEntry*rte);
37+
externCommonTableExpr*GetCTEForRTE(ParseState*pstate,RangeTblEntry*rte,
38+
intrtelevelsup);
3839
externNode*scanRTEForColumn(ParseState*pstate,RangeTblEntry*rte,
3940
char*colname,intlocation);
4041
externNode*colNameToVar(ParseState*pstate,char*colname,boollocalonly,

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