Hi,
Thanks for the reply.
> Hve you read
>
http://www.mysql.com/documentation/mysql/bychapter/manual_Performance.html#L
EFT_JOIN_optimization
> ?
Yes, many times, as well as just about everything else in the Performance
chapter. Am I missing something totally obvious? Should I even be using a
LEFT JOIN for my purpose?
Any why does using two separate queries execute much faster than one query?
0.03 sec:
SELECT files.id, dirs.name FROM files LEFT JOIN dirs ON files.dir_id=dirs.id
ORDER BY files.date DESC LIMIT 1;
0.00 sec + 0.00 sec:
SELECT id, dir_id FROM files ORDER BY date DESC LIMIT 1;
SELECT name FROM dirs WHERE id=<dir_id from last query>;
Later I want to use a LIMIT of 100 or more so I don't think using the
multiple queries will be an option then...
Jordan Russell
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