Question

I am using MySql database. and I am executing query like this:

select * 
from Request
where 
DATE_FORMAT(created_On,'%e/%m/%Y') between DATE_FORMAT(CURDATE() - 30, '%e/%m/%Y') and DATE_FORMAT(CURDATE(),'%e/%m/%Y')

it will return blank, means no records in result.

but if I write like this

select * 
from Request
where 
DATE_FORMAT(created_On,'%e/%m/%Y') between DATE_FORMAT(CURDATE() - 27, '%e/%m/%Y') and DATE_FORMAT(CURDATE(),'%e/%m/%Y')

It will fetch 100 hundred rows.

I want to ask that why i am subtract 30 days from current Date?

Answer 1

Assuming your date columns are proper DATETIME or DATE fields, you should not use DATE_FORMAT(). Use DATE_SUB() to subtract 30 days:

If created_On is DATETIME, use DATE() to truncate off the time portion:

SELECT * 
from Request
where 
  DATE(created_On) BETWEEN DATE_SUB(CURDATE(), INTERVAL 30 DAY) AND CURDATE()

If created_On is DATE, just use:

SELECT * 
from Request
where 
  created_On BETWEEN DATE_SUB(CURDATE(), INTERVAL 30 DAY) AND CURDATE()