如何在 MySQL 表格值中向任何空格添加特定字符?
为此,请使用 REPLACE() 函数并用字符替换空格。让我们首先创建一个表格 -
mysql> create table DemoTable (Subject text); Query OK, 0 rows affected (0.86 sec)
示例
使用 insert 命令向表格中插入一些记录 -
mysql> insert into DemoTable values('Introduction to MySQL'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('Java in depth'); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable values('Data Structure and Algorithm'); Query OK, 1 row affected (0.16 sec)
使用 select 语句显示表格中的所有记录 -
mysql> select *from DemoTable;
输出
+------------------------------+ | Subject | +------------------------------+ | Introduction to MySQL | | Java in depth | | Data Structure and Algorithm | +------------------------------+ 3 rows in set (0.00 sec)
以下是替换空格的查询 -
mysql> SELECT *,REPLACE(Subject,' ','_') as Subject_Name from DemoTable;
输出
+-------------------------------+------------------------------+ | 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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