FWIW, my preliminary testing shows no performance increase for adding
LIMIT 1 to the following construct:
[ SELECT | UPDATE ]
WHERE Table.UniqueID = <N>
In fact, there seems to be a slight performance edge to NOT appending
LIMIT 1 to the statement.
R.
-----Original Message-----
From: Robert DiFalco [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 29, 2006 9:06 AM
To: [email protected]
Subject: Performance: LIMIT 1 with UPDATE
Does using LIMIT 1 with UPDATE provide a performance improvement when
the WHERE condition is on a unique index or primary key?
R.
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