make sure to handle subqueries on top of subqueries #7730
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Signed-off-by: Andres Taylor <andres@planetscale.com>
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| select id from user where not id in (select col from music where music.user_id = 42) and id in (select col from music where music.user_id = 411) | ||
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| 1 ks_sharded/40-80: select col from music where music.user_id = 42 limit 10001 | ||
| 2 ks_sharded/40-80: select col from music where music.user_id = 411 limit 10001 | ||
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this does not tell what happened to the main query, where it is executed.
I have less knowledge here. so cc: @aquarapid
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It's not ideal, but acceptable; maybe make a note as a cleanup/enhancement item to add visibility of the top-level query?
harshit-gangal
approved these changes
Mar 23, 2021
Signed-off-by: Andres Taylor <andres@planetscale.com>
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Description
Planning subqueries on top of subqueries was not working as expected. We broke planning of this with the 9.0 release. This is to fix this regression.
Related Issue(s)
#7682
Checklist
Yes, to the release-9.0 branchAddedImpacted Areas in Vitess
Components that this PR will affect: