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Re: Optimize subquery, replace IN() with JOIN
Posted by: Øystein Grøvlen
Date: November 16, 2016 01:50AM

Hi Miron,

In theory, MySQL should be able to automatically convert this query into a join (so-called semi-join transformation). Please, show the output of EXPLAIN for this query. (SHOW CREATE TABLE for each table would also help.)

Thanks,

Øystein Grøvlen,
Senior Principal Software Engineer,
MySQL Group, Oracle,
Trondheim, Norway

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Optimize subquery, replace IN() with JOIN
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Miron jajtic
November 15, 2016 02:37PM
Re: Optimize subquery, replace IN() with JOIN
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Peter Brawley
November 15, 2016 03:34PM
Re: Optimize subquery, replace IN() with JOIN
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Miron jajtic
November 15, 2016 04:25PM
Re: Optimize subquery, replace IN() with JOIN
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Rick James
November 17, 2016 08:11PM
Re: Optimize subquery, replace IN() with JOIN
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Peter Brawley
November 22, 2016 02:44PM
Re: Optimize subquery, replace IN() with JOIN
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Miron jajtic
November 16, 2016 04:03AM
Re: Optimize subquery, replace IN() with JOIN
1151
Peter Brawley
November 16, 2016 12:51PM
Re: Optimize subquery, replace IN() with JOIN
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Miron jajtic
November 16, 2016 03:22PM
Re: Optimize subquery, replace IN() with JOIN
1112
Peter Brawley
November 16, 2016 04:44PM
Re: Optimize subquery, replace IN() with JOIN
944
sahar gull
December 27, 2016 05:32AM
Re: Optimize subquery, replace IN() with JOIN
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Øystein Grøvlen
November 16, 2016 01:50AM
Re: Optimize subquery, replace IN() with JOIN
1100
Miron jajtic
November 16, 2016 04:01AM
Re: Optimize subquery, replace IN() with JOIN
1356
Øystein Grøvlen
November 16, 2016 06:23AM


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