Optimize this query
Posted by: phouthasone thongmanivong
Date: July 31, 2012 08:05PM

Dear friends,
i have the following query

select distinct `loan_trend_ltr`.`ltr_period` AS `ltr_period`,
`loan_trend_ltr`.`bnk_code` AS `bnk_code`,
`contact_ctc`.`ctc_province_code` AS `ctc_province_code`,
`loan_trend_ltr`.`lon_class` AS `lon_class`,
`loan_trend_ltr`.`lon_status` AS `lon_status`,
`loan_trend_ltr`.`branch_id` AS `branch_id`,
`loan_trend_ltr`.`lon_sys_id` AS `lon_sys_id`,
`loan_trend_ltr`.`lon_update_date` AS `lon_update_date`
from (`loan_trend_ltr`
join `contact_ctc`
on(((`loan_trend_ltr`.`bnk_code` = `contact_ctc`.`bnk_code`)
and (`contact_ctc`.`branch_id` = `loan_trend_ltr`.`branch_id`))))

where (`contact_ctc`.`ctc_province_code` is not null)
group by `loan_trend_ltr`.`lon_sys_id` having (`loan_trend_ltr`.`lon_status` = _utf8'ACTIVE')

each table has 100000+ records so it takes so long time running.

anyone please help me optimize this query

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Optimize this query
July 31, 2012 08:05PM
August 01, 2012 09:02PM


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