huh. it's a varchar(50) on table1 and a varchar(50) on table2. i
wonder why explain is reporting 150 as key_len?
utf8?
yes. that does make sense.
is there anything else i can investgate?
Do you need utf8? :-)
yes. it's an internationalized application :)
Check your cache hits. I can't remember if you said, but is it an
InnoDB table? I'm guessing MyISAM since you have a 2G key buffer.
yes. we do have some tables as innodb - those that get many many inserts and
don't require any count(*) queries which as i understand it are slow in innodb -
if there's some reason that this kind of query would be faster under innodb i'm
happy to give it a try...
Check
key_read_requests and key_reads for the query (mysql-query-profiler is a
handy way to do this).
awesome. i will look into it.
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