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- 4447. By Alexander Barkov
-
MDEV-6649 Different warnings for TIME and TIME(N) when @@old_mode=
zero_date_ time_cast - 4446. By Sergey Petrunia
-
MDEV-6879: Dereference of NULL primary_file->table in DsMrr_impl:
:get_disk_ sweep_mrr_ cost() - Don't attempt to use BKA for materialized derived tables. The
table is neither filled nor fully opened yet, so attempt to
call handler->multi_ range_read_ info() causes crash. - 4445. By Sergey Petrunia
-
MDEV-6878: Use of uninitialized saved_primary_key in Mrr_ordered_
index_reader: :resume_ read() - Make Mrr_ordered_
index_reader: :resume_ read() restore index position
only if it was saved before with Mrr_ordered_index_reader: :interrupt_ read(). - 4442. By Sergey Petrunia
-
MDEV-6519: Assertion `join->best_read < double(...)' failed after adding a key to a TokuDB table...
- calculate_
cond_selectivit y_for_table( ) should handle the case
where index statistics is not available (zeros are returned
in rec_per_key) - 4441. By Sergey Petrunia
-
MDEV-6442: Assertion `join->best_read < double(...)' failed with optimizer_
use_condition_ selectivity >=3 - Fix the crash by making get_column_
range_cardinali ty()
to handle the special case where Column_stats objects
is an all-zeros object (the question of what is the point
of having Field::read_stats point to such object remains a
mystery)- Added a few comments. Learning the code still.
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