postgres

Commit Graph

Author	SHA1	Message	Date
Tom Lane	25d9bf2e3e	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	17 years ago

Author

SHA1

Message

Date

Tom Lane

25d9bf2e3e

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

17 years ago

1 Commits (8de7472b45859108761223fb19b396efaa8f0a4d)