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Slow query
Posted by: Dragos Gabriel Iancu
Date: February 11, 2011 08:55AM

Hi. I have a query that executs slow. I have index on columns but still it is slow.

The query is:
mysql> explain SELECT locId, location.city as city,latitude,longitude FROM ip2isp join location on ip2isp.location=locId WHERE INET_ATON('x.x.x.x') BETWEEN start AND end;
+----+-------------+----------+--------+-------------------+---------+---------+---------------------------------+---------+-------------+
| id | select_type | table    | type   | possible_keys     | key     | key_len | ref                             | rows    | Extra       |
+----+-------------+----------+--------+-------------------+---------+---------+---------------------------------+---------+-------------+
|  1 | SIMPLE      | ip2isp   | ALL    | isp2idx,start,end | NULL    | NULL    | NULL                            | 1126339 | Using where |
|  1 | SIMPLE      | location | eq_ref | PRIMARY           | PRIMARY | 4       | transfer_ro_pre.ip2isp.location |       1 | Using where |
+----+-------------+----------+--------+-------------------+---------+---------+---------------------------------+---------+-------------+
2 rows in set (0.00 sec)

mysql>

It seems like it dosn`t use indexes.

I create the indexes like:
mysql> alter table ip2isp add key using btree (start);
mysql> alter table ip2isp add key using btree (end);

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