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Improve UPDATE/DELETE WHERE CURRENT OF so that they can be used from plpgsql

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with a plpgsql-defined cursor.  The underlying mechanism for this is that the
main SQL engine will now take "WHERE CURRENT OF $n" where $n is a refcursor
parameter.  Not sure if we should document that fact or consider it an
implementation detail.  Per discussion with Pavel Stehule.
This commit is contained in:
Tom Lane
2007-06-11 22:22:42 +00:00
parent bdc71c2cb1
commit a9545b3aef
13 changed files with 225 additions and 72 deletions
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4
src/backend/executor/nodeTidscan.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/nodeTidscan.c,v 1.54 2007/06/11 01:16:22 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/nodeTidscan.c,v 1.55 2007/06/11 22:22:40 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -153,7 +153,7 @@ TidListCreate(TidScanState *tidstate)
CurrentOfExpr *cexpr = (CurrentOfExpr *) expr;
ItemPointerData cursor_tid;
if (execCurrentOf(cexpr->cursor_name,
if (execCurrentOf(cexpr, econtext,
RelationGetRelid(tidstate->ss.ss_currentRelation),
&cursor_tid))
{