commit_try_rebuild(): Invoke trx_t::drop_table_statistics()
with the correct (original) name of the table.
This fixes a regression that was introduced in
commit 1bd681c8b3 (MDEV-25506 part 3).
innobase_rename_indexes_cache(): fix corruption of index cache. Index ids
help distinguish indexes when their names clash.
innobase_rename_indexes_cache(): fix corruption of index statistics table.
Use unique temporary names to avoid names clashing.
Reviewed by: Marko Mäkelä
compare_keys_but_name(): do not use KEY_PART_INFO::field for
Field::is_equal(). Following the logic of that code we need to
compare fields of a table. But KEY_PART_INFO::field sometimes
(when key part is shorter than table field) is a different field.
In that case Field::is_equal() returns incorrect result and
problems occur.
KEY_PART_INFO::field may become some strange field in
open_frm_error open_table_from_share(). I think this is an
incorrect logic, some tecnhical debt. I'm not fixing it right now,
because I don't have time. But I'm making Field::field_length
a const class member. Then, the only fishy code which changed that
field requires now a const_cast<>. I'm bringing attention to that
code with it. This change should not affect logic of the
program in any way.
memmove() should be used instead of memcpy() for overlapping memory regions.
Overlapping memory regions itself here are fine, because code simply removes
one element from arbitrary position of an array.
Just rename index in data dictionary and in InnoDB cache when it's possible.
Introduce ALTER_INDEX_RENAME for that purpose so that engines can optimize
such operation.
Unused code between macro MYSQL_RENAME_INDEX was removed.
compare_keys_but_name(): compare index definitions except for index names
Alter_inplace_info::rename_keys:
ha_innobase_inplace_ctx::rename_keys: vector of rename indexes
fill_alter_inplace_info():: fills Alter_inplace_info::rename_keys
