如何在MySQL表值中的任何空白处添加特定字符？
为此，请使用REPLACE()function并用字符替换空白。让我们首先创建一个表-
mysql> create table DemoTable (Subject text);
示例
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values('Introduction to MySQL');
mysql> insert into DemoTable values('Java in depth');
mysql> insert into DemoTable values('Data Structure and Algorithm');使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
输出结果
+------------------------------+ | Subject | +------------------------------+ | Introduction to MySQL | | Java in depth | | Data Structure and Algorithm | +------------------------------+ 3 rows in set (0.00 sec)
以下是替换空白的查询-
mysql> SELECT *,REPLACE(Subject,' ','_') as Subject_Name from DemoTable;
输出结果
+-------------------------------+------------------------------+ | Subject | Subject_Name | +-------------------------------+------------------------------+ | Introduction to MySQL | Introduction_to_MySQL | | Java in depth | Java_in_depth | | Data Structure and Algorithm | Data_Structure_and_Algorithm | +-------------------------------+------------------------------+ 3 rows in set (0.00 sec)
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