nocturn4l
asked on
Having trouble with the COUNT function in SQL (Microsoft Access)
Microsoft Access 2003
Tables
Teacher = [CourseN, Quarter,TeacherName]
Course = [Course N Quarter , DayTime, Room #]/ Examples of DayTime: M 2:00,
W 4:50, and T 8:00.
Student = [studentName,Course #, Quarter]
^The underlined words are the primary keys
I want to be able to list the student name that took the most courses.. but I'm having trouble coming up with the correct syntax
SELECT A.studentName
FROM Student A
WHERE (SELECT COUNT(CourseN)
FROM Student B
WHERE COUNT(CourseN)) > ......something here
or If I wanted to list every course number and the student's name who has taken the same course twice... I have something like:
SELECT A.studentName
FROM Student AS A
GROUP BY A.studentName
HAVING Count(CourseN)>2;
but that's coming up wrong too..
any help would be appreciated, thanks
Tables
Teacher = [CourseN, Quarter,TeacherName]
Course = [Course N Quarter , DayTime, Room #]/ Examples of DayTime: M 2:00,
W 4:50, and T 8:00.
Student = [studentName,Course #, Quarter]
^The underlined words are the primary keys
I want to be able to list the student name that took the most courses.. but I'm having trouble coming up with the correct syntax
SELECT A.studentName
FROM Student A
WHERE (SELECT COUNT(CourseN)
FROM Student B
WHERE COUNT(CourseN)) > ......something here
or If I wanted to list every course number and the student's name who has taken the same course twice... I have something like:
SELECT A.studentName
FROM Student AS A
GROUP BY A.studentName
HAVING Count(CourseN)>2;
but that's coming up wrong too..
any help would be appreciated, thanks
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ASKER
for the 1st one i had to change it to:
SELECT TOP 1 A.studentName, COUNT(A.CourseN)
FROM Student A
GROUP BY A.studentName
ORDER BY A.studentName DESC;
and 2nd one i changed it to:
SELECT A.studentName, A.CourseN, COUNT(A.CourseN)
FROM Student AS A
GROUP BY A.studentName, A.CourseN
HAVING COUNT(A.CourseN) >= 2;
thanks again, it was of much help