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如何用MySQL修剪逗号？

2024-05-02 11:12:58 440

语法如下以修剪逗号-

SELECT TRIM(BOTH ',' FROM yourColumnName) from yourTableName;

让我们看一个例子-

mysql> create table TrimCommasDemo
   -> (
   -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> AllTechnicalSkills text
   -> );

现在，您可以使用insert命令在表中插入一些记录。查询如下-

mysql> insert into TrimCommasDemo(AllTechnicalSkills) values(',C,C++,Java,');
mysql> insert into TrimCommasDemo(AllTechnicalSkills) values(',MySQL,SQL
Server,MongoDB,');
mysql> insert into TrimCommasDemo(AllTechnicalSkills) values(',Spring
Framework,Hibernate Framework,');

使用select语句显示表中的所有记录。查询如下-

mysql> select *from TrimCommasDemo;

这是输出-

+----+----------------------------------------+
| Id | AllTechnicalSkills                     |
+----+----------------------------------------+
| 1  | ,C,C++,Java,                           |
| 2  | ,MySQL,SQL Server,MongoDB,             |
| 3  | ,Spring Framework,Hibernate Framework, |
+----+----------------------------------------+
3 rows in set (0.00 sec)

以下是从MySQL的开头和结尾修剪逗号的查询-

mysql> select TRIM(BOTH ',' FROM AllTechnicalSkills) from TrimCommasDemo;

这是输出-

+----------------------------------------+
| TRIM(BOTH ',' FROM AllTechnicalSkills) |
+----------------------------------------+
| C,C++,Java                             |
| MySQL,SQL Server,MongoDB               |
| Spring Framework,Hibernate Framework   |
+----------------------------------------+
3 rows in set (0.00 sec)

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如何用MySQL修剪逗号？

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