| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SIMPLE | a0_ | const | PRIMARY | PRIMARY | 4 | const | 1 | |
| 1 | SIMPLE | a1_ | const | PRIMARY | PRIMARY | 4 | const | 1 | |
| 1 | SIMPLE | c2_ | const | PRIMARY | PRIMARY | 4 | const | 1 |
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SIMPLE | a0_ | const | PRIMARY | PRIMARY | 4 | const | 1 | |
| 1 | SIMPLE | a1_ | const | PRIMARY | PRIMARY | 4 | const | 1 | |
| 1 | SIMPLE | c2_ | const | PRIMARY | PRIMARY | 4 | const | 1 |