Question

I just want to display Start or End Error Message on my msg column with dates values using mysql

This is my query

SELECT `id`,`name`,`start_date`,`end_date` FROM teams 
WHERE sub_cat_id = '84' AND  SYSDATE() > `start_date` AND SYSDATE() < `end_date` ORDER BY `id` DESC;

I am little much confuse about to display error messages then how do I track the Start and End date message?

If system date is greater than start date the message will be show start or the same scenario for end date the message will be show end.

Answer 1

Try:

SELECT `id`,`name`,`start_date`,`end_date`, '' `error_message`
FROM teams 
WHERE sub_cat_id = '84' AND  SYSDATE() > `start_date` AND SYSDATE() < `end_date` 
UNION ALL
SELECT NULL `id`, NULL `name`, NULL `start_date`, NULL `end_date`, 
       CASE WHEN MIN(`start_date`)<SYSDATE() THEN 'Start'
            WHEN MAX(`end_date`)>SYSDATE() THEN 'End'
            WHEN COUNT(*)=0 THEN 'SubCat'
       END `error_message`
FROM teams 
WHERE sub_cat_id = '84' AND  
      NOT EXISTS (SELECT 1 FROM teams 
                  WHERE sub_cat_id = '84' AND  SYSDATE() > `start_date` AND SYSDATE() < `end_date`)
ORDER BY `id` DESC;