本文介绍MySQL数据库中执行select查询语句,并对查询的结果使用order by 子句进行排序。
再来回顾一下SQL语句中的select语句的语法:
Select 语句的基本语法:
Select from where order by
如果要对查询结果按某个字段排序,则要使用order by 子句,如下:
select * from order by
下面来看两个例子,第一个查询test表中所有数据,并按t_id正序排列;第二个查询与第一个相反,是逆序排列。
mysql> select t_id,t_name from test order by t_id;
+------+--------+
| t_id | t_name |
+------+--------+
| 1 | name1 |
| 2 | name2 |
+------+--------+
2 rows in set (0.00 sec)
mysql> select t_id,t_name from test order by t_id desc;
+------+--------+
| t_id | t_name |
+------+--------+
| 2 | name2 |
| 1 | name1 |
+------+--------+
2 rows in set (0.00 sec)
注意:正序排序时,可以使用asc作为排序方式的关键词,也可以不使用。逆序时,一定要使用desc作为关键词。
关于MySQL中select语句使用order按行排序,本文就介绍这么多,希望对大家有所帮助,谢谢!

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