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[21] tell mysql to ignore the sort index for search queries #29322

Merged
merged 2 commits into from
Nov 4, 2021
Merged

[21] tell mysql to ignore the sort index for search queries #29322

merged 2 commits into from
Nov 4, 2021

Commits on Oct 18, 2021

  1. allow specifying index hints for mysql search queries 

    Signed-off-by: Robin Appelman <robin@icewind.nl>
    @icewind1991
    icewind1991 committed Oct 18, 2021
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  2. tell mysql to ignore the sort index for search queries 

    mysql really likes to pick an index for sorting if it can't fully satisfy the where
filter with an index, since search queries pretty much never are fully filtered by index
mysql often picks an index for sorting instead of the *much* more useful index for filtering.

To bypass this, we tell mysql explicitly not to use the mtime (the default order field) index,
so it will instead pick an index that is actually useful.

Signed-off-by: Robin Appelman <robin@icewind.nl>
    @icewind1991
    icewind1991 committed Oct 18, 2021
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