专门做名片的网站,柯桥区建设集团网站,北京光辉网站建设,运营推广渠道有哪些要在末尾添加百分号#xff0c;请使用CONCAT()函数。让我们首先创建一个表-mysql create table DemoTable(StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,StudentName varchar(100),StudentScore int);使用插入命令在表中插入一些记录-mysql insert into DemoTa…要在末尾添加百分号请使用CONCAT()函数。让我们首先创建一个表-mysql create table DemoTable(StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,StudentName varchar(100),StudentScore int);使用插入命令在表中插入一些记录-mysql insert into DemoTable(StudentName,StudentScore) values(John,65);mysql insert into DemoTable(StudentName,StudentScore) values(Chris,98);mysql insert into DemoTable(StudentName,StudentScore) values(Robert,91);使用select语句显示表中的所有记录-mysql select *from DemoTable;这将产生以下输出---------------------------------------| StudentId | StudentName | StudentScore |--------------------------------------| 1 | John | 65 || 2 | Chris | 98 || 3 | Robert | 91 |--------------------------------------3 rows in set (0.00 sec)以下是使用MySQL SELECT语句在末尾向每个值添加百分号()的查询-mysql select StudentId,StudentName,concat(StudentScore,%) AS StudentScore from DemoTable;这将产生以下输出---------------------------------------| StudentId | StudentName | StudentScore |--------------------------------------| 1 | John | 65% || 2 | Chris | 98% || 3 | Robert | 91% |--------------------------------------3 rows in set (0.00 sec)
