How do I use properly CASE..WHEN in MySQL

Question

Here is a demo query, notice it is very simple, Fetches only where base_price is 0, And still, it chooses the condition 3:

SELECT
   CASE course_enrollment_s         


        

Answer 1

SELECT
   CASE 
    WHEN course_enrollment_settings.base_price = 0      THEN 1
    WHEN course_enrollment_settings.base_price>0 AND  
         course_enrollment_settings.base_price<=100     THEN 2
    WHEN course_enrollment_settings.base_price>100 AND   
         course_enrollment_settings.base_price<201      THEN 3
        ELSE 6
   END AS 'calc_base_price',
   course_enrollment_settings.base_price
FROM
    course_enrollment_settings
WHERE course_enrollment_settings.base_price = 0