id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
---|---|---|---|---|---|---|---|---|---|
1 | SIMPLE | a | range | c_status | c_status | 6 | 3 | Using index condition; Using filesort | |
1 | SIMPLE | b | eq_ref | PRIMARY | PRIMARY | 9 | mahm3t_cs443.a.option_id,const | 1 | Using where |