On 10 Jul 2009, at 03:44, sangprabv wrote:

SELECT count(sql_id) AS total, DATE_FORMAT(insertdate, '%H:%i' ) AS
mydate FROM momt WHERE 1=1 AND insertdate BETWEEN DATE_ADD(NOW(),
INTERVAL - 1 HOUR) AND NOW() AND (sms_type = 1 OR sms_type =2) GROUP BY
mydate ORDER BY insertdate


Firstly do an EXPLAIN on that and make sure it's got and is using appropriate indexes. Straight off a couple of small changes should help:

SELECT count(*) AS total, DATE_FORMAT(insertdate, '%H:%i' ) AS
mydate FROM momt WHERE 1=1 AND insertdate > DATE_ADD(NOW(),
INTERVAL - 1 HOUR) AND (sms_type = 1 OR sms_type =2) GROUP BY
mydate ORDER BY insertdate

This assumes that insertdate can't be in the future...

Marcus
--
Marcus Bointon
Synchromedia Limited: Creators of http://www.smartmessages.net/
UK resellers of i...@hand CRM solutions
mar...@synchromedia.co.uk | http://www.synchromedia.co.uk/


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