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Re: Queries in Locked State
Posted by: Rick James
Date: October 03, 2011 09:51AM

> But the question is: can a query on a single db, lock each other queries on other databases?
No. (Perhaps you meant "table" instead of "database"?)

One query can slow down other queries because of resource contention. But it will not lock them out if there is not direct conflict.

> there is a "WHERE" clause (with an index)
Let's see the INDEX and the WHERE clause -- there are many subtle ways in which the index could be useless.

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