MariaDB [federated]> select * from information_schema.processlist\G
*************************** 1. row ***************************
             ID: 5
           USER: r1
           HOST: localhost:37028
             DB: federated
        COMMAND: Query
           TIME: 2674
          STATE: Sending data
           INFO: delete  from `OUTR1` using ((`federated`.`B` `OUTR2` join `federated`.`D` `OUTR3` on(`federated`.`OUTR2`.`pk` > `federated`.`OUTR3`.`col_int_key`)) left join `federated`.`D` `OUTR1` on(`federated`.`OUTR1`.`col_int_nokey` = `federated`.`OUTR2`.`col_int_key`)) where `federated`.`OUTR1`.`col_int_key` in (select `federated`.`INNR1`.`pk` from `federated`.`CC` `INNR1` where `federated`.`INNR1`.`col_int_nokey` <= 1 or `federated`.`INNR1`.`pk` <= 4 union select `federated`.`INNR1`.`pk` from `federated`.`AA` `INNR1` group by `federated`.`INNR1`.`col_int_uniq` having count(0) >= 2)
        TIME_MS: 2674123.027
          STAGE: 0
      MAX_STAGE: 0
       PROGRESS: 0.000
    MEMORY_USED: 1843144
MAX_MEMORY_USED: 3416008
  EXAMINED_ROWS: 25512808
      SENT_ROWS: 0
       QUERY_ID: 165
    INFO_BINARY: delete  from `OUTR1` using ((`federated`.`B` `OUTR2` join `federated`.`D` `OUTR3` on(`federated`.`OUTR2`.`pk` > `federated`.`OUTR3`.`col_int_key`)) left join `federated`.`D` `OUTR1` on(`federated`.`OUTR1`.`col_int_nokey` = `federated`.`OUTR2`.`col_int_key`)) where `federated`.`OUTR1`.`col_int_key` in (select `federated`.`INNR1`.`pk` from `federated`.`CC` `INNR1` where `federated`.`INNR1`.`col_int_nokey` <= 1 or `federated`.`INNR1`.`pk` <= 4 union select `federated`.`INNR1`.`pk` from `federated`.`AA` `INNR1` group by `federated`.`INNR1`.`col_int_uniq` having count(0) >= 2)
            TID: 3076349
 TMP_SPACE_USED: 0