delect from score where 学号=2009 and 课程名=政治
delect from score where 学号=2009 and 课程名=政治
delete from 表名 where status=1什么意思
已知三张表结构如下:学生(学号,姓名,年龄,性别) 选修(学号,课程号,成绩) 课程(课程号,课程名
SQL >select count(*) from Teacher where teacherCode=? and te
SELECT name FROM [BookStore].[dbo].[user] WHERE userid=?AND
else if(score>=90&&score
$query = mysql_query( select * from 表名 where id='$_GET[id]'
float score; if ( int(score)-score!=0 ) ...这样输入提示错误我想判断score
where is she from?=where does she from?
Where is he from?=Where( )he( )from?
我用between and最后查出来了,Select * from [表名] where createtime betw
例如我创建了成绩表(学号,总分,课程名1,课程名2,课程名3)但是课程要在程序运行后才晓得具体的名称,因外表是在输入了课