mysql> select count(*) from poller_output;
+----------+
| count(*) |
+----------+
|  2173157 |
+----------+
1 row in set (0.00 sec)

mysql> select count(*) from poller_output,poller_item;
+------------+
| count(*)   |
+------------+
| 5600225589 |
+------------+
1 row in set (0.00 sec)

mysql> select count(*) from poller_item;
+----------+
| count(*) |
+----------+
|     2577 |
+----------+
1 row in set (0.00 sec)