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Ensure that an Execute operation can't send tuples in cases where

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Describe would claim that no tuples will be returned.  Only affects
SELECTs added to non-SELECT base queries by rewrite rules.  If you
want to see the output of such a select, you gotta use 'simple Query'
protocol.
This commit is contained in:
Tom Lane
2003-05-06 21:01:04 +00:00
parent 79913910d4
commit 8f6a6b7e9a
1 changed files with 18 additions and 1 deletions
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19
src/backend/tcop/pquery.c
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@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/pquery.c,v 1.62 2003/05/06 20:26:27 tgl Exp $ * $Header: /cvsroot/pgsql/src/backend/tcop/pquery.c,v 1.63 2003/05/06 21:01:04 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -727,6 +727,23 @@ PortalRunMulti(Portal portal,
List *plantree_list = portal->planTrees; List *plantree_list = portal->planTrees;
List *querylist_item; List *querylist_item;
/*
* If the destination is RemoteExecute, change to None. The reason
* is that the client won't be expecting any tuples, and indeed has no
* way to know what they are, since there is no provision for Describe
* to send a RowDescription message when this portal execution strategy
* is in effect. This presently will only affect SELECT commands added
* to non-SELECT queries by rewrite rules: such commands will be executed,
* but the results will be discarded unless you use "simple Query"
* protocol.
*/
if (dest->mydest == RemoteExecute ||
dest->mydest == RemoteExecuteInternal)
dest = None_Receiver;
if (altdest->mydest == RemoteExecute ||
altdest->mydest == RemoteExecuteInternal)
altdest = None_Receiver;
/* /*
* Loop to handle the individual queries generated from a * Loop to handle the individual queries generated from a
* single parsetree by analysis and rewrite. * single parsetree by analysis and rewrite.