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MDEV-23600 Division by 0 in row_search_with_covering_prefix

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The InnoDB index fields store bytes, not characters.
Remove some unnecessary conversions from characters to bytes.

This also fixes MDEV-20422 and the wrong-result bug MDEV-12486.
This commit is contained in:
Marko Mäkelä
2020-09-01 15:52:36 +03:00
parent feac078f15
commit 94e9dc95d4
10 changed files with 439 additions and 683 deletions
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5
mysql-test/t/innodb_ext_key.combinations Normal file
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@ -0,0 +1,5 @@
[on]
optimizer_switch=extended_keys=on
[off]
optimizer_switch=extended_keys=off