How to use greater than operator in mysql query with date which is in the type varchar

Question

I have a mysql table task with fields

tid int(10),
sdate varchar(25), -- `30-08-2017`
tname varchar(30)`

I want to select details from the table with following condition. Here is my sql query.

Select * from task where sdate < '07-09-2017';

But I can't get any records with this condition. Please any other solution for this issue...Thanks to all in advance

Answer 1

It's better idea to change your column data type to DateTime or what ever your need than using a query like this one:

SELECT * FROM task
WHERE STR_TO_DATE(sdate, '%d-%m-%Y') < STR_TO_DATE('07-09-2017', '%d-%m-%Y');