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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/include/nodes/execnodes.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: execnodes.h,v 1.106 2003/09/25 18:58:36 tgl Exp $
* $Id: execnodes.h,v 1.107 2003/10/01 21:30:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -286,7 +286,7 @@ typedef struct EState
/* Basic state for all query types: */
ScanDirection es_direction; /* current scan direction */
Snapshot es_snapshot; /* time qual to use */
CommandId es_snapshot_cid; /* CommandId component of time qual */
Snapshot es_crosscheck_snapshot; /* crosscheck time qual for RI */
List *es_range_table; /* List of RangeTableEntrys */
/* Info about target table for insert/update/delete queries: */