rendered paste body+----+--------------+------------------------+-------+---------------+------+---------+------+------+--------------------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+--------------+------------------------+-------+---------------+------+---------+------+------+--------------------------+
| 1 | PRIMARY | cdr | range | calldate,dst | dst | 250 | NULL | 87 | Using where; Using index |
| 2 | UNION | cdr | range | calldate,dst | dst | 250 | NULL | 84 | Using where; Using index |
| 3 | UNION | cdr | range | calldate,dst | dst | 250 | NULL | 70 | Using where; Using index |
| 4 | UNION | cdr | range | calldate,dst | dst | 250 | NULL | 98 | Using where; Using index |
| 5 | UNION | cdr | range | calldate,dst | dst | 250 | NULL | 93 | Using where; Using index |
| 6 | UNION | cdr | range | calldate,dst | dst | 250 | NULL | 103 | Using where; Using index |
| 7 | UNION | cdr | range | calldate,dst | dst | 250 | NULL | 85 | Using where; Using index |
| 8 | UNION | cdr | range | calldate,dst | dst | 250 | NULL | 6 | Using where; Using index |
| NULL | UNION RESULT | <union1,2,3,4,5,6,7,8> | ALL | NULL | NULL | NULL | NULL | NULL | |
+----+--------------+------------------------+-------+---------------+------+---------+------+------+--------------------------+
9 rows in set (0.00 sec)