diff options
Diffstat (limited to 'src/backend/commands/tablecmds.c')
| -rw-r--r-- | src/backend/commands/tablecmds.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index 2e43a32ae5..40a5683916 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -3521,6 +3521,37 @@ RenameRelationInternal(Oid myrelid, const char *newrelname, bool is_internal, bo } /* + * ResetRelRewrite - reset relrewrite + */ +void +ResetRelRewrite(Oid myrelid) +{ + Relation relrelation; /* for RELATION relation */ + HeapTuple reltup; + Form_pg_class relform; + + /* + * Find relation's pg_class tuple. + */ + relrelation = table_open(RelationRelationId, RowExclusiveLock); + + reltup = SearchSysCacheCopy1(RELOID, ObjectIdGetDatum(myrelid)); + if (!HeapTupleIsValid(reltup)) /* shouldn't happen */ + elog(ERROR, "cache lookup failed for relation %u", myrelid); + relform = (Form_pg_class) GETSTRUCT(reltup); + + /* + * Update pg_class tuple. + */ + relform->relrewrite = InvalidOid; + + CatalogTupleUpdate(relrelation, &reltup->t_self, reltup); + + heap_freetuple(reltup); + table_close(relrelation, RowExclusiveLock); +} + +/* * Disallow ALTER TABLE (and similar commands) when the current backend has * any open reference to the target table besides the one just acquired by * the calling command; this implies there's an open cursor or active plan. |