Home >Database >Mysql Tutorial >Sort MySQL table by two columns?

Sort MySQL table by two columns?

WBOY
WBOYforward
2023-09-04 19:53:101367browse

按两列对 MySQL 表进行排序?

Sort a MySQL table by two columns with the help of the following syntax -

order by yourColumnName1 DESC,yourColumnName2 DESC;

Let us first create a table for our example -

mysql> create table OrderByDemo
   -> (
   -> StudentId int,
   -> StudentName varchar(100),
   -> StudentAge int
   -> );
Query OK, 0 rows affected (0.57 sec)

With the help of The insert command inserts records into the table. The query is as follows -

mysql> insert into OrderByDemo values(1,'John',23);
Query OK, 1 row affected (0.20 sec)
mysql> insert into OrderByDemo values(3,'Johnson',24);
Query OK, 1 row affected (0.27 sec)
mysql> insert into OrderByDemo values(4,'Carol',26);
Query OK, 1 row affected (0.14 sec)
mysql> insert into OrderByDemo values(2,'David',20);
Query OK, 1 row affected (0.13 sec)

Now, apply the above syntax to sort the two columns in the MySQL table. The query is as follows -

mysql> select *from OrderByDemo order by StudentId ASC, StudentAge ASC;

The following is the output of sorting the two columns in ascending order -

+-----------+-------------+------------+
| StudentId | StudentName | StudentAge |
+-----------+-------------+------------+
|         1 | John        |         23 |
|         2 | David       |         20 |
|         3 | Johnson     |         24 |
|         4 | Carol       |         26 |
+-----------+-------------+------------+
4 rows in set (0.00 sec)

Or you can do it in descending order with the help of DESC command. The query is as follows -

mysql> select *from OrderByDemo order by StudentId DESC,StudentAge DESC;

The following is the output -

+-----------+-------------+------------+
| StudentId | StudentName | StudentAge |
+-----------+-------------+------------+
|         4 | Carol       |         26 |
|         3 | Johnson     |         24 |
|         2 | David       |         20 |
|         1 | John        |         23 |
+-----------+-------------+------------+
4 rows in set (0.00 sec)

Note - Primary sorting works first.

The above is the detailed content of Sort MySQL table by two columns?. For more information, please follow other related articles on the PHP Chinese website!

Statement:
This article is reproduced at:tutorialspoint.com. If there is any infringement, please contact admin@php.cn delete