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| 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/catalog/indexing.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/catalog/indexing.c')
| -rw-r--r-- | src/backend/catalog/indexing.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/backend/catalog/indexing.c b/src/backend/catalog/indexing.c index b7079722312..65fe6d5efde 100644 --- a/src/backend/catalog/indexing.c +++ b/src/backend/catalog/indexing.c @@ -9,7 +9,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/catalog/indexing.c,v 1.117 2009/01/01 17:23:37 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/catalog/indexing.c,v 1.118 2009/07/29 20:56:18 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -134,7 +134,8 @@ CatalogIndexInsert(CatalogIndexState indstate, HeapTuple heapTuple) isnull, /* is-null flags */ &(heapTuple->t_self), /* tid of heap tuple */ heapRelation, - relationDescs[i]->rd_index->indisunique); + relationDescs[i]->rd_index->indisunique ? + UNIQUE_CHECK_YES : UNIQUE_CHECK_NO); } ExecDropSingleTupleTableSlot(slot); |