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Results tagged with mysql
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user 131569
All versions of MySQL (not Microsoft SQL Server). Please also add a version-specific tag like mysql-5.7 if that is relevant to the question.
1
vote
Simple SELECT-query on big table gets stuck in "Sending data" state
I believe that for a small interval the index chosen by the query optimizer is the one that uses the timestamp, so it is faster.
I think a composite index class, timestamp would solve the problem.
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