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Repair RI trigger visibility problems (this time for sure ;-)) per recent

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discussion on pgsql-hackers: in READ COMMITTED mode we just have to force
a QuerySnapshot update in the trigger, but in SERIALIZABLE mode we have
to run the scan under a current snapshot and then complain if any rows
would be updated/deleted that are not visible in the transaction snapshot.
This commit is contained in:
Tom Lane
2003-10-01 21:30:53 +00:00
parent 6099bc03f3
commit 55d85f42a8
15 changed files with 210 additions and 84 deletions
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4
src/backend/executor/execUtils.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execUtils.c,v 1.105 2003/09/25 18:58:35 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execUtils.c,v 1.106 2003/10/01 21:30:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -178,7 +178,7 @@ CreateExecutorState(void)
*/
estate->es_direction = ForwardScanDirection;
estate->es_snapshot = SnapshotNow;
estate->es_snapshot_cid = FirstCommandId;
estate->es_crosscheck_snapshot = SnapshotAny; /* means no crosscheck */
estate->es_range_table = NIL;
estate->es_result_relations = NULL;