Drill Through report not working for large data

Question

Hi,
In SSRS 2008 R2, I have a main report and a drill through report from one of the main report's column. The drill through report works mostly except if the data is too large i.e. more than 1 million records. How to fix this problem?
Thanks,
Jkrishna

Answer 1

Nope. WHat I meant was not to show the entire data in child report (ie your 1 million records). Instead add extra parameter as PageNumber. By default set it as 1 when you navigate to child report (default value)
Then in query behind use a ROW_NUMBER based logic like below
SELECT *
FROM
SELEC ROW_NUMBER() OVER (ORDER BY <combination of unique valued column(s)>) AS Rn,...
Your existing query other columns
)t
WHERE Rn BETWEEN ((@PageNo-1) * 1000) + 1 AND @PageNo * 1000
Assuming you want 1000 per page
So when it renders it will show first 1000 records. Add a NextPage icon to report footer and when clicked add a jump to report functionality to same report but with PageNumber parameter value as
=Parameters!PageNumber.Value + 1
and it will then give you second page data etc 
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