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Oleg Smirnov aa70eeac2c MDEV-36761: Put NULL-aware cardinality estimation under new_mode flag 
The NULL-aware index statistics fix is now controlled by the
FIX_INDEX_STATS_FOR_ALL_NULLS flag and disabled by default
for preserving execution plan stability in stable versions.

To enable:
  SET @@new_mode = 'FIX_INDEX_STATS_FOR_ALL_NULLS';

Or via command line:
  --new-mode=FIX_INDEX_STATS_FOR_ALL_NULLS

Or in configuration file:
  [mysqld]
  new_mode=FIX_INDEX_STATS_FOR_ALL_NULLS

`all_nulls_key_parts` bitmap is now calculated at set_statistics_for_table()
2025-10-31 19:47:30 +07:00
..
inc Merge branch '10.11' into 11.4 2025-06-17 09:50:22 +02:00
r MDEV-36761: Put NULL-aware cardinality estimation under new_mode flag 2025-10-31 19:47:30 +07:00
t MDEV-37784 fix the warning 2025-10-25 00:19:11 +07:00
disabled.def MDEV-21452: Replace ib_mutex_t with mysql_mutex_t 2020-12-15 17:56:18 +02:00