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MySQL中获取列的子字符串

2024-05-20 01:23:06 438

使用SUBSTR()方法获取列的子字符串。

让我们首先创建一个表-

create table DemoTable
-> (
-> Title text
-> );

使用插入命令在表中插入一些记录-

insert into DemoTable values('This is a MySQL Database');

insert into DemoTable values('Java is an Object Oriented Programming Language');

使用select语句显示表中的所有记录-

select *from DemoTable ;

输出结果

这将产生以下输出-

+-------------------------------------------------+
| Title                                           |
+-------------------------------------------------+
| This is a MySQL Database                        |
| Java is an Object Oriented Programming Language |
+-------------------------------------------------+
2 rows in set (0.00 sec)

这是选择列子串的查询-

SELECT distinct(substr(Title, 1, 8)) from DemoTable;

输出结果

这将产生以下输出-

+-----------------------+
| (substr(Title, 1, 8)) |
+-----------------------+
| This is               |
| Java is               |
+-----------------------+
2 rows in set (0.00 sec)

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MySQL中获取列的子字符串

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