MySQL中是否有CONCAT()的替代方法？

是的，替代方法是CONCAT_WS()。让我们首先创建一个表-

create table DemoTable ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(100) );

示例

使用插入命令在表中插入一些记录-

insert into DemoTable(StudentName) values(Chris); insert into DemoTable(StudentName) values(Robert); insert into DemoTable(StudentName) values(Bob);

使用select语句显示表中的所有记录-

select *from DemoTable;

输出结果

+-----------+-------------+ | StudentId | StudentName | +-----------+-------------+ | 1 | Chris | | 2 | Robert | | 3 | Bob | +-----------+-------------+ 3 rows in set (0.00 sec)

让我们看看如何在MySQL中使用CONCAT()的替代方法-

select concat_ws(SPACE(2), Student Name is:,StudentName) from DemoTable;

输出结果

+-----------------------------------------------------+ | concat_ws(SPACE(2), Student Name is:,StudentName) | +-----------------------------------------------------+ | Student Name is: Chris | | Student Name is: Robert | | Student Name is: Bob | +-----------------------------------------------------+ 3 rows in set (0.04 sec)