SELECT sum(rate),DATE_FORMAT(date_time, ‘%Y-%c-%d’) as dt FROM `trans_tble` group by `dt`
Reff link : http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-format
Reff link : http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-format
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