MySQL查询从列值中删除特殊字符？
让我们首先创建一个表-
mysql> create table DemoTable -> ( -> StudentId varchar(100) -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values('STU#123');
mysql> insert into DemoTable values('STU#567');
mysql> insert into DemoTable values('STU#98494');使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
输出结果
这将产生以下输出-
+-----------+ | StudentId | +-----------+ | STU#123 | | STU#567 | | STU#98494 | +-----------+ 3 rows in set (0.00 sec)
以下是删除特殊字符的查询-
mysql> update DemoTable -> set StudentId=replace(StudentId,'#',''); Rows matched: 3 Changed: 3 Warnings: 0
让我们再次检查表记录-
mysql> select *from DemoTable;
输出结果
这将产生以下输出-
+-----------+ | StudentId | +-----------+ | STU123 | | STU567 | | STU98494 | +-----------+ 3 rows in set (0.00 sec)