2009年7月29日 20:56:21 +0000 (20:56 +0000)
2009年7月29日 20:56:21 +0000 (20:56 +0000)
commit 25d9bf2e3e66ee2e546c5c523d148ecab6ee1dcc
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