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| author | Brion Vibber <brion@pobox.com> | 2010-02-21 15:21:18 -0800 |
|---|---|---|
| committer | Brion Vibber <brion@pobox.com> | 2010-02-21 15:21:18 -0800 |
| commit | f6ebe815382a61574df5f9452ee9a0ea4ae38f0c (patch) | |
| tree | 508fe7eea757ef3821118fb88e25a1f03e554acd /background | |
| parent | 5253a99d7abb27f7b17d6fdbc725498fbedd0aaa (diff) | |
Performance fix for FriendFeed sup interface: MySQL query optimizer was doing a table scan on notice; explicit subquery makes it run much more efficiently, only scanning items within the period under consideration. Standard subquery should be PostgreSQL-compatible.
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