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ea2f09979f
Like in MDEV-27217 vers_set_hist_part() for LIMIT depends on all
partitions selected in read_partitions. That bugfix just disabled
partition selection for DELETE with this check:
if (table->pos_in_table_list &&
table->pos_in_table_list->partition_names)
{
return HA_ERR_PARTITION_LIST;
}
ALTER TABLE TRUNCATE PARTITION is a different story. First, it doesn't
update pos_in_table_list->partition_names, but
thd->lex->alter_info.partition_names. But we cannot depend on that
since alter_info will be stale for DML. Second, we should not disable
TRUNCATE PARTITION for that to be consistent with TRUNCATE TABLE
behavior.
Now we don't do vers_set_hist_part() for ALTER TABLE as this command
is not DML, so it does not produce history.