Re: Slow query performance
Sure, here you go:
mysql> explain SELECT COUNT(BLOCKGROUP_ID) FROM BLOCKGROUP_DEMOGRAPHIC;
+----+-------------+------------------------+-------+---------------+---------+---------+------+--------+-------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+------------------------+-------+---------------+---------+---------+------+--------+-------------+
| 1 | SIMPLE | BLOCKGROUP_DEMOGRAPHIC | index | NULL | PRIMARY | 12 | NULL | 208685 | Using index |
+----+-------------+------------------------+-------+---------------+---------+---------+------+--------+-------------+
1 row in set (0.04 sec)
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