While developing web application , in many many places we face the problem where we can use only MYSQL and get the number of number of days between two given dates using MySQL.
Syntax - DATEDIFF(FirstDate,SecondDate)
This function will calculate the difference bretween two dates and give the out put in number of days. It will give the result positive only if first date is grater than second date. If Second date is greater than First date than it will give the negative result.
Query : SELECT DATEDIFF('2010-01-05', '2009-12-15');
Result : 21
Query : SELECT DATEDIFF('2009-12-15', '2010-01-05');
Result : -21
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