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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/nodes/outfuncs.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/nodes/outfuncs.c')
| -rw-r--r-- | src/backend/nodes/outfuncs.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c index 4e808a5868e..e4de1c5aee2 100644 --- a/src/backend/nodes/outfuncs.c +++ b/src/backend/nodes/outfuncs.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.361 2009/07/16 06:33:42 petere Exp $ + * $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.362 2009/07/29 20:56:19 tgl Exp $ * * NOTES * Every node type that can appear in stored rules' parsetrees *must* @@ -1734,6 +1734,8 @@ _outIndexStmt(StringInfo str, IndexStmt *node) WRITE_BOOL_FIELD(unique); WRITE_BOOL_FIELD(primary); WRITE_BOOL_FIELD(isconstraint); + WRITE_BOOL_FIELD(deferrable); + WRITE_BOOL_FIELD(initdeferred); WRITE_BOOL_FIELD(concurrent); } @@ -2285,6 +2287,8 @@ _outConstraint(StringInfo str, Constraint *node) WRITE_NODE_FIELD(keys); WRITE_NODE_FIELD(options); WRITE_STRING_FIELD(indexspace); + WRITE_BOOL_FIELD(deferrable); + WRITE_BOOL_FIELD(initdeferred); break; case CONSTR_UNIQUE: @@ -2292,6 +2296,8 @@ _outConstraint(StringInfo str, Constraint *node) WRITE_NODE_FIELD(keys); WRITE_NODE_FIELD(options); WRITE_STRING_FIELD(indexspace); + WRITE_BOOL_FIELD(deferrable); + WRITE_BOOL_FIELD(initdeferred); break; case CONSTR_CHECK: |