You can achieve this with the help of ORDER BY CASE statement. The syntax is as follows −
SELECT *FROM yourTableName ORDER BY CASE yourIntegerColumnName1 WHEN 2 THEN 1 ELSE 0 END DESC ,yourDateColumnName ASC;
To understand the above syntax, let us create a table. The query to create a table is as follows −
mysql> create table OrderByCaseDemo -> ( -> Id int NOT NULL AUTO_INCREMENT, -> GroupId int, -> ArrivalDate date, -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (1.57 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into OrderByCaseDemo(GroupId,ArrivalDate) values(2,'19/02/06'); Query OK, 1 row affected (0.13 sec) mysql> insert into OrderByCaseDemo(GroupId,ArrivalDate) values(1,'20/02/06'); Query OK, 1 row affected (0.20 sec) mysql> insert into OrderByCaseDemo(GroupId,ArrivalDate) values(3,'18/02/06'); Query OK, 1 row affected (0.12 sec) mysql> insert into OrderByCaseDemo(GroupId,ArrivalDate) values(3,'21/02/06'); Query OK, 1 row affected (0.23 sec) mysql> insert into OrderByCaseDemo(GroupId,ArrivalDate) values(2,'17/02/06'); Query OK, 1 row affected (0.17 sec) mysql> insert into OrderByCaseDemo(GroupId,ArrivalDate) values(1,'22/02/06'); Query OK, 1 row affected (0.14 sec)
Display all records from the table using a select statement. The query is as follows −
mysql> select *from OrderByCaseDemo;
The following is the output −
+----+---------+-------------+ | Id | GroupId | ArrivalDate | +----+---------+-------------+ | 1 | 2 | 2019-02-06 | | 2 | 1 | 2020-02-06 | | 3 | 3 | 2018-02-06 | | 4 | 3 | 2021-02-06 | | 5 | 2 | 2017-02-06 | | 6 | 1 | 2022-02-06 | +----+---------+-------------+ 6 rows in set (0.00 sec)
Here is the query to order by date column as well as an integer column −
mysql> select *from OrderByCaseDemo order by case GroupId when 2 then 1 else 0 end desc,ArrivalDate asc;
The following is the output −
+----+---------+-------------+ | Id | GroupId | ArrivalDate | +----+---------+-------------+ | 5 | 2 | 2017-02-06 | | 1 | 2 | 2019-02-06 | | 3 | 3 | 2018-02-06 | | 2 | 1 | 2020-02-06 | | 4 | 3 | 2021-02-06 | | 6 | 1 | 2022-02-06 | +----+---------+-------------+ 6 rows in set (0.00 sec)