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/nodes/equalfuncs.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/nodes/equalfuncs.c')
| -rw-r--r-- | src/backend/nodes/equalfuncs.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/nodes/equalfuncs.c b/src/backend/nodes/equalfuncs.c index 121fbd0d2ee..6fceab27855 100644 --- a/src/backend/nodes/equalfuncs.c +++ b/src/backend/nodes/equalfuncs.c @@ -22,7 +22,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.358 2009/07/26 23:34:18 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.359 2009/07/29 20:56:19 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1160,6 +1160,8 @@ _equalIndexStmt(IndexStmt *a, IndexStmt *b) COMPARE_SCALAR_FIELD(unique); COMPARE_SCALAR_FIELD(primary); COMPARE_SCALAR_FIELD(isconstraint); + COMPARE_SCALAR_FIELD(deferrable); + COMPARE_SCALAR_FIELD(initdeferred); COMPARE_SCALAR_FIELD(concurrent); return true; @@ -2068,6 +2070,8 @@ _equalConstraint(Constraint *a, Constraint *b) COMPARE_NODE_FIELD(keys); COMPARE_NODE_FIELD(options); COMPARE_STRING_FIELD(indexspace); + COMPARE_SCALAR_FIELD(deferrable); + COMPARE_SCALAR_FIELD(initdeferred); return true; } |