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I have a table called date_count with 2 columns one is a value and another is a date time, say called date_time in mysql. Date Time in mysql is stored as dd-mm-yy hh:mm:ss. The issue comes when I need to get the number of rows per day. As its stored as date time format in mysql , you need to specify both date and time when you specify a group by. So grouping by day is not possible in that case. So we need to use the in-build mysql function DATE(). The function accepts date time as parameter and returns only date back. So we just need to use the DATE() function where we need to group by date and all the date time values are converted to date and can be grouped by date. So here is the implementation of it.