SQL custom collation

SQL Custom collation

The original data

Result sequence data display

Apply： Submit a request
Review： Wait for a response
Finish： Task to complete
Sort by date and status , First status is ： Submit a request （Apply）— In reverse chronological order , Then the status is ： Wait for a response （Review）— In reverse chronological order , Then the status is ： Task to complete （Finish）— In reverse chronological order .

Create table statement

DROP TABLE IF EXISTS `customsort`;
CREATE TABLE `customsort` ( `status` VARCHAR ( 255 ), `date1` date );
INSERT INTO `customsort` VALUES ('Review', '2022-01-11');
INSERT INTO `customsort` VALUES ('Apply', '2022-01-11');
INSERT INTO `customsort` VALUES ('Review', '2022-01-01');
INSERT INTO `customsort` VALUES ('Finish', '2022-01-14');
INSERT INTO `customsort` VALUES ('Apply', '2022-01-01');
INSERT INTO `customsort` VALUES ('Review', '2022-01-05');

Use case when Conditions then result ........ end

SELECT STATUS
	,
	date1,
	( CASE WHEN STATUS = 'Apply' THEN 0 WHEN STATUS = 'Review' THEN 1 WHEN STATUS = 'Finish' THEN 2 ELSE 3 END ) type 
FROM
	customsort

to status Assign values with sort size type

Custom sort SQL

SELECT STATUS
	,
	date1 
FROM
	customsort 
WHERE
	STATUS IN ( 'Apply', 'Review', 'Finish' ) 
ORDER BY
	( CASE WHEN STATUS = 'Apply' THEN 0 WHEN STATUS = 'Review' THEN 1 WHEN STATUS = 'Finish' THEN 3 ELSE 4 END ),
	date1 DESC;

There are deficiencies , Please mention it in the comments ！！！！！！！