Thanks Singer, this took my query down to 0.0007, perfect! I wasn't
aware a single index of multiple columns would work when one of the
columns was in the WHERE clause and the other in the ORDER BY clause.
Learn something new every day I guess!
On 08/10/2011 02:03 PM, Singer X.J. Wang wrote:
Try a index on (dst_port,close_dt)
On Wed, Aug 10, 2011 at 14:01, Brandon Phelps <bphe...@gls.com
<mailto:bphe...@gls.com>> wrote:
Hello all,
I am using the query below and variations of it to query a database
with a TON of records. Currently the database has around 11 million
records but it grows every day and should cap out at around 150 million.
I am curious if there is any way I can better optimize the below
query, as currently it takes this query around 10 seconds to run but
I am sure this will get slower and slower as the database grows.
SELECT
open_dt,
close_dt,
protocol,
INET_NTOA(src_address) AS src_address,
src_port,
INET_NTOA(dst_address) AS dst_address,
dst_port,
sent,
rcvd
FROM connections
WHERE
dst_port = 80
ORDER BY close_dt DESC
LIMIT 0, 30
I do have an index on the dst_port column, as you can see by the
output of EXPLAIN:
id 1
select_type SIMPLE
table connections
type ref
possible_keys dst_port
key dst_port
key_len 2
ref const
rows 1109273
Extra Using where; Using filesort
Thanks in advance,
--
Brandon
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe:
http://lists.mysql.com/mysql?__unsub=w...@singerwang.com
<http://lists.mysql.com/mysql?unsub=w...@singerwang.com>
--
The best compliment you could give Pythian for our service is a referral.
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
