在两个日期之间选择数据以手动插入日期

Question

            SELECT * FROM users 
            WHERE birthday BETWEEN '08-06' AND  '15-06'

This is my query to select data between two dates. I know this is duplicate question but their is slight problem to my situation.

The Dates which I m storing are manually inserted to db using dropdown list which is varchar datatype

Problem: The Results for this query only selects data using date(dd) values and not compares whole date string

This is the result im getting which selects data from month 7 as well

    bday
   09-06-1985
   08-06-1990
   09-07-1991

Answer 1

Like other people write in comments, it's always best to use datetime data type for date. You can compare your varchar date like this

SELECT * FROM users 
WHERE STR_TO_DATE(birthday, '%d-%m')
  BETWEEN STR_TO_DATE('08-06', '%d-%m')
    AND STR_TO_DATE('15-06', '%d-%m')