SELECT table_name FROM information_schema.tables where table_schema="mysql" and table_name not in ("columns_priv","db","event","func","general_log","help_category","help_keyword,"help_relation","help_topic","host","innodb_index_stats","innodb_table_stats","ndb_binlog_index","plugin","proc","procs_priv","proxies_priv","servers","slave_master_info","slave_relay_log_info","slave_worker_info","slow_log","tables_priv","time_zone","time_zone_leap_second","time_zone_name","time_zone_transition","time_zone_transition_type","user"); /*exclude normal tables*/