为此,请使用ORDER BY子句。让我们首先创建一个表-
mysql> create table DemoTable ( StudentId int );
现在您可以使用insert命令在表中插入一些记录-
mysql> insert into DemoTable values(100); mysql> insert into DemoTable values(60); mysql> insert into DemoTable values(70); mysql> insert into DemoTable values(45); mysql> insert into DemoTable values(55); mysql> insert into DemoTable values(78);
使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
输出结果
+-----------+ | StudentId | +-----------+ | 100 | | 60 | | 70 | | 45 | | 55 | | 78 | +-----------+ 6 rows in set (0.00 sec)
以下是使用ORDER BY按值排序的查询。在这里,由于我们已使用ORDER BY设置了其顺序,因此首先显示70。其余ID以升序显示-
mysql> select *from DemoTable order by StudentId=70 desc,StudentId asc;
输出结果
+-----------+ | StudentId | +-----------+ | 70 | | 45 | | 55 | | 60 | | 78 | | 100 | +-----------+ 6 rows in set (0.00 sec)