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Sergey Petrunya authored
- After the merge from mysql-5.6, open_tables() did not call open_and_process_table() for temporary table. The logic was that temporary tables were already opened when mysql_execute_command() has called open_temporary_tables(). This worked for the most part, except for temporary tables of type MERGE. for which open_and_process_table() must call table->file->extra(HA_EXTRA_ADD_CHILDREN_LIST). Failure to make this call resulted in crash further in execution. tables->table->file->extra(HA_EXTRA_ADD_CHILDREN_LIST)
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