… with great performance gains a lot of times. I had 2 thoughts – either something is going on with parser or it… bug of 5.0. At row0sel.c:row_search_for_mysql() “PHASE 3:”, InnoDB judge whether the SQL is “SELECT” or not…->isolation_level select_lock_type != LOCK_NONE && trx->mysql_query_str) { /* Scan the MySQL query string; check if SELECT is the first…