如何在 MySQL 表格值中向任何空格新增特定字元?
為此,請使用 REPLACE() 函式並用字元替換空格。讓我們首先建立一個表格 -
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記錄 -
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 語句顯示錶格中的所有記錄 -
mysql> select *from DemoTable;
輸出
+------------------------------+ | Subject | +------------------------------+ | Introduction to MySQL | | Java in depth | | Data Structure and Algorithm | +------------------------------+ 3 rows in set (0.00 sec)
以下是替換空格的查詢 -
mysql> SELECT *,REPLACE(Subject,' ','_') as Subject_Name from DemoTable;
輸出
+-------------------------------+------------------------------+ | 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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