MySQL Forums
Forum List  »  Performance

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);

Options: ReplyQuote


Subject
Views
Written By
Posted
Slow query
2185
February 11, 2011 08:55AM
793
February 12, 2011 03:32PM
901
February 14, 2011 07:55AM
669
February 14, 2011 08:12AM
661
February 14, 2011 09:59AM
576
February 14, 2011 10:57AM
618
February 14, 2011 06:51PM
619
February 15, 2011 03:21AM
853
February 15, 2011 11:17AM


Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.