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MDEV-34993, part2: backport optimizer_adjust_secondary_key_costs

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...and make the fix for MDEV-34993 switchable. It is enabled by default
and controlled with @optimizer_adjust_secondary_key_costs=fix_card_multiplier
This commit is contained in:
Sergei Petrunia
2024-09-24 10:23:34 +03:00
parent 8166a5d33d
commit 1cda4726ca
9 changed files with 175 additions and 1 deletions
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10
mysql-test/suite/sys_vars/r/sysvars_server_notembedded.result
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@@ -2402,6 +2402,16 @@ NUMERIC_BLOCK_SIZE 1
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME OPTIMIZER_ADJUST_SECONDARY_KEY_COSTS
VARIABLE_SCOPE SESSION
VARIABLE_TYPE SET
VARIABLE_COMMENT A bit field with the following values: fix_card_multiplier = Fix the computation in selectivity_for_indexes. selectivity_multiplier. This variable will be deleted in MariaDB 11.0 as it is not needed with the new 11.0 optimizer.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST fix_card_multiplier
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME OPTIMIZER_MAX_SEL_ARG_WEIGHT
VARIABLE_SCOPE SESSION
VARIABLE_TYPE BIGINT UNSIGNED