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Commit8f6a6b7

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Ensure that an Execute operation can't send tuples in cases where
Describe would claim that no tuples will be returned. Only affectsSELECTs added to non-SELECT base queries by rewrite rules. If youwant to see the output of such a select, you gotta use 'simple Query'protocol.
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‎src/backend/tcop/pquery.c

Lines changed: 18 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/tcop/pquery.c,v 1.62 2003/05/0620:26:27 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/tcop/pquery.c,v 1.63 2003/05/0621:01:04 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -727,6 +727,23 @@ PortalRunMulti(Portal portal,
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List*plantree_list=portal->planTrees;
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List*querylist_item;
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/*
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* If the destination is RemoteExecute, change to None. The reason
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* is that the client won't be expecting any tuples, and indeed has no
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* way to know what they are, since there is no provision for Describe
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* to send a RowDescription message when this portal execution strategy
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* is in effect. This presently will only affect SELECT commands added
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* to non-SELECT queries by rewrite rules: such commands will be executed,
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* but the results will be discarded unless you use "simple Query"
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* protocol.
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*/
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if (dest->mydest==RemoteExecute||
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dest->mydest==RemoteExecuteInternal)
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dest=None_Receiver;
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if (altdest->mydest==RemoteExecute||
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altdest->mydest==RemoteExecuteInternal)
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altdest=None_Receiver;
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/*
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* Loop to handle the individual queries generated from a
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* single parsetree by analysis and rewrite.

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