how can i count number in records in a table and pass it to gridview

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Hi every body

I have a table of courses and another for students.
And I need to fill a grid view with the following information

1- course ID
2- course name
3- number of students in each course

Without repeating the course name, means each course in a single row.

Note: I am using a query builder.

than you

Posted 18-Jan-13 11:22am

Nasser Abu Farah

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PIEBALDconsult 18-Jan-13 18:42pm

More information is required. There ought to be a table to provide a many-to-many relationship between the students and courses.

Nasser Abu Farah 18-Jan-13 18:47pm

OK
I have the three tables, what I am really concerned about is how to calculate the number of students in the StudentCourses table for each course using the query builder or a C# code.
thank you

2 solutions

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Nandakishore G N · Answer 1 · 2013-01-18T17:36:00

Solution 1

to do that use the Group BY Clause of sql

refer this link
http://www.tizag.com/sqlTutorial/sqlgroupby.php[^]

Posted 18-Jan-13 17:36pm

Nandakishore G N

prubyholl · Answer 2 · 2013-01-18T22:10:00

Solution 2

select
course_id,
count(students_id)
from studentcoursestable

group by course_id

---format syntax and object names
---and next time do a little google search

Posted 18-Jan-13 22:10pm

prubyholl