Retrieval of data from database through select statement using c#.net

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I have a database where there are 3 clubs dance club,drama club,science club. i have a query to count the number of clubs a student is a part of from the database.when i run the query in sql management studio it works perfectly fine.
When i add the query to c#.net making a connection and retrieving data using ExecuteReader(). Here the problem occurs.When i run the code and display the rows in gridview i do not get count but get as

id name count
1. xyz 1
2. xyz 1
3. pqr 1

i.e xyz is a part of 2 clubs and hence 2 rows

i want (ouput from sql management studio)

1. xyz 2
1. pqr 1

Posted 22-Dec-14 21:20pm

Member 11316644

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Praveen Kumar Upadhyay 23-Dec-14 3:31am

What is the query that you are passing in the C# application.

Member 11316644 23-Dec-14 3:41am

select b.* from(select id,name,'I' s_type,count(club)I_cnt from #temp_table where club='I'
group by id,name
union
select id,name,'II's_type,count(club)II_cnt from #temp_table where club='II'
group by id,name
union
select id,name,'III's_type,count(club)III_cnt from #temp_table where club='III'
group by id,name)b
order by id,s_type

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Sibasisjena · Answer 1 · 2014-12-22T21:42:00

Solution 1

I think you need the Group By clause. Please check below link

GROUP BY Statement[^]

something like below.

SQL

SELECT ID, NAME , COUNT (STUDENTID) FROM CLUB   GROUP BY ID

Posted 22-Dec-14 21:42pm

Sibasisjena

Updated 22-Dec-14 21:46pm

v3

Comments

Member 11316644 23-Dec-14 4:00am

i have already used group by. And the query runs perfectly fine when executed in SQL management studio

Sibasisjena 23-Dec-14 5:01am

Can you post your c# code