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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/commands/copy.c | |
| parent | 850490579318ff52097eec92ce535357dd0c7a3a (diff) | |
| download | postgresql-25d9bf2e3e66ee2e546c5c523d148ecab6ee1dcc.tar.gz postgresql-25d9bf2e3e66ee2e546c5c523d148ecab6ee1dcc.zip | |
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/commands/copy.c')
| -rw-r--r-- | src/backend/commands/copy.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c index b41da6385db..21f7b94d546 100644 --- a/src/backend/commands/copy.c +++ b/src/backend/commands/copy.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/copy.c,v 1.315 2009/07/25 17:04:19 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/commands/copy.c,v 1.316 2009/07/29 20:56:18 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -2130,6 +2130,8 @@ CopyFrom(CopyState cstate) if (!skip_tuple) { + List *recheckIndexes = NIL; + /* Place tuple in tuple slot */ ExecStoreTuple(tuple, slot, InvalidBuffer, false); @@ -2141,10 +2143,12 @@ CopyFrom(CopyState cstate) heap_insert(cstate->rel, tuple, mycid, hi_options, bistate); if (resultRelInfo->ri_NumIndices > 0) - ExecInsertIndexTuples(slot, &(tuple->t_self), estate, false); + recheckIndexes = ExecInsertIndexTuples(slot, &(tuple->t_self), + estate, false); /* AFTER ROW INSERT Triggers */ - ExecARInsertTriggers(estate, resultRelInfo, tuple); + ExecARInsertTriggers(estate, resultRelInfo, tuple, + recheckIndexes); /* * We count only tuples not suppressed by a BEFORE INSERT trigger; |