rdelaage/postgresql
1
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2024-10-06 18:46:54 +02:00
Code Issues Packages Projects Releases Wiki Activity

Acquire appropriate locks when rewriting during RMV.

Browse Source 
Since the query has not been freshly parsed when executing REFRESH
MATERIALIZED VIEW, locks must be explicitly taken before rewrite.

Backpatch to 9.3.

Andres Freund
This commit is contained in:
Kevin Grittner 2013-11-02 19:18:41 -05:00
parent b2cd72cbbd
commit b21aed3964
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/backend/commands/matview.c
View File

@ -242,9 +242,12 @@ refresh_matview_datafill(DestReceiver *dest, Query *query,
List *rewritten;
PlannedStmt *plan;
QueryDesc *queryDesc;
Query *copied_query;
/* Rewrite, copying the given Query to make sure it's not changed */
rewritten = QueryRewrite((Query *) copyObject(query));
/* Lock and rewrite, using a copy to preserve the original query. */
copied_query = copyObject(query);
AcquireRewriteLocks(copied_query, false);
rewritten = QueryRewrite(copied_query);
/* SELECT should never rewrite to more or less than one SELECT query */
if (list_length(rewritten) != 1)