diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2009-07-29 20:56:21 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2009-07-29 20:56:21 +0000 |
| commit | 25d9bf2e3e66ee2e546c5c523d148ecab6ee1dcc (patch) | |
| tree | b0dee0f1d6111fd6658d432ec30e5ddb88adc02f /src/backend/access/nbtree/nbtree.c | |
| parent | 850490579318ff52097eec92ce535357dd0c7a3a (diff) | |
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
Diffstat (limited to 'src/backend/access/nbtree/nbtree.c')
| -rw-r--r-- | src/backend/access/nbtree/nbtree.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/backend/access/nbtree/nbtree.c b/src/backend/access/nbtree/nbtree.c index 2b76e7cd453..87a8a225dbf 100644 --- a/src/backend/access/nbtree/nbtree.c +++ b/src/backend/access/nbtree/nbtree.c @@ -12,7 +12,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/access/nbtree/nbtree.c,v 1.171 2009/06/11 14:48:54 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/access/nbtree/nbtree.c,v 1.172 2009/07/29 20:56:18 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -217,18 +217,19 @@ btinsert(PG_FUNCTION_ARGS) bool *isnull = (bool *) PG_GETARG_POINTER(2); ItemPointer ht_ctid = (ItemPointer) PG_GETARG_POINTER(3); Relation heapRel = (Relation) PG_GETARG_POINTER(4); - bool checkUnique = PG_GETARG_BOOL(5); + IndexUniqueCheck checkUnique = (IndexUniqueCheck) PG_GETARG_INT32(5); + bool result; IndexTuple itup; /* generate an index tuple */ itup = index_form_tuple(RelationGetDescr(rel), values, isnull); itup->t_tid = *ht_ctid; - _bt_doinsert(rel, itup, checkUnique, heapRel); + result = _bt_doinsert(rel, itup, checkUnique, heapRel); pfree(itup); - PG_RETURN_BOOL(true); + PG_RETURN_BOOL(result); } /* |