| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PRIMARY | <derived2> | ALL | 21 | |||||
| 2 | DERIVED | s0_ | ALL | 21 | Using where; Using temporary | ||||
| 2 | DERIVED | e1_ | ref | IDX_B26681EED5CA9E6 | IDX_B26681EED5CA9E6 | 4 | azcorp_institut.s0_.id | 1 | Using index; Distinct |