From 25d9bf2e3e66ee2e546c5c523d148ecab6ee1dcc Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Wed, 29 Jul 2009 20:56:21 +0000 Subject: Support deferrable uniqueness constraints. The current implementation fires an AFTER ROW trigger for each tuple that looks like it might be non-unique according to the index contents at the time of insertion. This works well as long as there aren't many conflicts, but won't scale to massive unique-key reassignments. Improving that case is a TODO item. Dean Rasheed --- src/backend/utils/cache/relcache.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/backend/utils/cache') diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c index 775865d5696..639593743d0 100644 --- a/src/backend/utils/cache/relcache.c +++ b/src/backend/utils/cache/relcache.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.287 2009/06/11 14:49:05 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.288 2009/07/29 20:56:19 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -2938,7 +2938,7 @@ RelationGetIndexList(Relation relation) /* Check to see if it is a unique, non-partial btree index on OID */ if (index->indnatts == 1 && - index->indisunique && + index->indisunique && index->indimmediate && index->indkey.values[0] == ObjectIdAttributeNumber && index->indclass.values[0] == OID_BTREE_OPS_OID && heap_attisnull(htup, Anum_pg_index_indpred)) -- cgit v1.2.3