Question

I’m trying to write a query that returns me the selected rows of the columns based on x and y row values of another column.

But the following query is returning me all the rows of the two selected columns even though I’ve specified a range. Could anyone please tell me what’s wrong I’m doing?

select username, password 
from loginuser 
group by username, password 
having count(id) between '1' and '2'

Answer 1

The HAVING operator is to be applied to aggregate functions – if you want to pick those rows where a SUM exceeds a certain value or something.

You just want a regular selection – use a WHERE clause for that:

SELECT username, password 
FROM dbo.loginuser 
WHERE id BETWEEN 1 and 2

This will select all rows where the value of ID is between 1 and 2.

If you want to select by row number, ordered by ID – you need something like this:

;WITH RowNumberValues AS
(
   SELECT username, password,
          ROW_NUMBER() OVER(ORDER BY ID) AS 'RowNum' 
   FROM dbo.loginuser 
)
SELECT username, password
FROM RowNumberValues
WHERE RowNum BETWEEN 1 AND 2

If you don’t have any SUM or COUNT in your query, you shouldn’t be using a GROUP BY either…

Is that what you’re looking for?? Based on your question and query, it’s not entirely clear what you’re really looking for…. can you describe in more detail what you want to select’?