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Add ONLY support to LOCK and TRUNCATE. By default, these commands are now

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recursive.

=> Note this incompatibility in the release notes.
This commit is contained in:
Peter Eisentraut
2009-01-12 08:54:27 +00:00
parent b7b8f0b609
commit ca8100f9eb
7 changed files with 287 additions and 38 deletions
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30
src/backend/commands/tablecmds.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.276 2009/01/01 17:23:39 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.277 2009/01/12 08:54:26 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -772,17 +772,41 @@ ExecuteTruncate(TruncateStmt *stmt)
{
RangeVar *rv = lfirst(cell);
Relation rel;
bool recurse = interpretInhOption(rv->inhOpt);
Oid myrelid;
rel = heap_openrv(rv, AccessExclusiveLock);
myrelid = RelationGetRelid(rel);
/* don't throw error for "TRUNCATE foo, foo" */
if (list_member_oid(relids, RelationGetRelid(rel)))
if (list_member_oid(relids, myrelid))
{
heap_close(rel, AccessExclusiveLock);
continue;
}
truncate_check_rel(rel);
rels = lappend(rels, rel);
relids = lappend_oid(relids, RelationGetRelid(rel));
relids = lappend_oid(relids, myrelid);
if (recurse)
{
ListCell *child;
List *children;
children = find_all_inheritors(myrelid);
foreach(child, children)
{
Oid childrelid = lfirst_oid(child);
if (list_member_oid(relids, childrelid))
continue;
rel = heap_open(childrelid, AccessExclusiveLock);
truncate_check_rel(rel);
rels = lappend(rels, rel);
relids = lappend_oid(relids, childrelid);
}
}
}
/*