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Re: how to speed up query on a table with over 20million records?
Posted by: Peter Brawley
Date: March 25, 2018 10:03PM

> could you check the second query I posted, the index should be right.

Nothing stands out to me in the trace for the 2nd query. I populated your 2nd table with 100k rows, as one would expect Explain says it likes the PK, the query ran in a quarter of a second on an old box running 5.7. If I were you I'd try the query on a local copy of the table.

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