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Repair bug #2836: SPI_execute_plan returned zero if none of the querytrees

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were marked canSetTag.  While it's certainly correct to return the result
of the last one that is marked canSetTag, it's less clear what to do when
none of them are.  Since plpgsql will complain if zero is returned, the
8.2.0 behavior isn't good.  I've fixed it to restore the prior behavior of
returning the physically last query's result code when there are no
canSetTag queries.
This commit is contained in:
Tom Lane 2006-12-26 16:56:22 +00:00
parent 5ceb508422
commit b85a4cda83
1 changed files with 9 additions and 2 deletions
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11
src/backend/executor/spi.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/spi.c,v 1.165.2.1 2006/12/08 00:40:33 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/spi.c,v 1.165.2.2 2006/12/26 16:56:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1341,6 +1341,7 @@ _SPI_execute_plan(_SPI_plan *plan, Datum *Values, const char *Nulls,
volatile uint32 my_processed = 0;
volatile Oid my_lastoid = InvalidOid;
SPITupleTable *volatile my_tuptable = NULL;
volatile int res = 0;
Snapshot saveActiveSnapshot;
/* Be sure to restore ActiveSnapshot on error exit */
@ -1396,7 +1397,6 @@ _SPI_execute_plan(_SPI_plan *plan, Datum *Values, const char *Nulls,
Plan *planTree;
QueryDesc *qdesc;
DestReceiver *dest;
int res;
planTree = lfirst(plan_list_item);
plan_list_item = lnext(plan_list_item);
@ -1546,6 +1546,13 @@ fail:
/* tuptable now is caller's responsibility, not SPI's */
_SPI_current->tuptable = NULL;
/*
* If none of the queries had canSetTag, we return the last query's result
* code, but not its auxiliary results (for backwards compatibility).
*/
if (my_res == 0)
my_res = res;
return my_res;
}