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Support deferrable uniqueness constraints.

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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
This commit is contained in:
Tom Lane
2009-07-29 20:56:21 +00:00
parent 8504905793
commit 25d9bf2e3e
51 changed files with 1241 additions and 245 deletions
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6
src/backend/bootstrap/bootparse.y
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/bootstrap/bootparse.y,v 1.96 2009/01/01 17:23:36 momjian Exp $
* $PostgreSQL: pgsql/src/backend/bootstrap/bootparse.y,v 1.97 2009/07/29 20:56:18 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -266,7 +266,7 @@ Boot_DeclareIndexStmt:
NULL,
$10,
NULL, NIL,
false, false, false,
false, false, false, false, false,
false, false, true, false, false);
do_end();
}
@ -284,7 +284,7 @@ Boot_DeclareUniqueIndexStmt:
NULL,
$11,
NULL, NIL,
true, false, false,
true, false, false, false, false,
false, false, true, false, false);
do_end();
}