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/include/utils/builtins.h | |
| 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/include/utils/builtins.h')
| -rw-r--r-- | src/include/utils/builtins.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h index 5547b6c8c93..72b39f70685 100644 --- a/src/include/utils/builtins.h +++ b/src/include/utils/builtins.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.334 2009/07/16 06:33:46 petere Exp $ + * $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.335 2009/07/29 20:56:21 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1029,6 +1029,9 @@ extern Datum window_nth_value(PG_FUNCTION_ARGS); /* access/transam/twophase.c */ extern Datum pg_prepared_xact(PG_FUNCTION_ARGS); +/* commands/constraint.c */ +extern Datum unique_key_recheck(PG_FUNCTION_ARGS); + /* commands/prepare.c */ extern Datum pg_prepared_statement(PG_FUNCTION_ARGS); |