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- I'd be curious to know the difference between #2 and this query, or, if there would be any difference: SELECT name FROM user WHERE uid IN (SELECT uid FROM user_profile WHERE address = 'some constant');Drew– Drew2009-11-12 22:31:23 +00:00Commented Nov 12, 2009 at 22:31
- 2EXPLAIN both? I would guess the former as I've never seen great performance from sub-selects in MySQL.Greg K– Greg K2009-11-12 22:31:50 +00:00Commented Nov 12, 2009 at 22:31
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