$result = mysql_query("SELECT Student.StuNumber,Student.StuName,Course.CourseName,Course.Coursexuefen,Grade.CourseGrade FROM Student,Course,Grade where Student.StuNumber=Grade.StuNumber and Course.CourseNumber=Grade.CourseNumber ") or die(mysql_error()); php 会告诉你问题出在哪里
php 会告诉你问题出在哪里
$sql = "create table Grade(
StuNumber varchar(10),
CourseNumber varchar(10),
CourseGrade int,
primary key(StuNumber,CourseNumber)
)";
你这个SQL不是没myql_query 吗