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Build a User Access Table to Determine Access In SSRS Report

Posted on 2013-01-17
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Last Modified: 2013-02-04
Hi Experts

Technologies: SQL Server 2008 R2 and SSRS Reports rendered using Report Manager

My current client is in the health industry.

We are building a drill-through report that contains sensitive patient data. Therefore we need to control access, the deeper you drill-through the 3 levels the more restrictive it becomes.

Considering there are hundreds of potential users across the county, this will add a huge administrative overhead.

To help share the load, the idea is to build a table that we can populate with every employee and determine their level of access. We can then build a simple front-end so that multiple managers can edit access levels for their respective teams.

Assumptions
We can access all employee data quickly.
Getting the table to interface with SSRS to help determine access levels is the crucial part right now. We can worry about the front-end later.

Questions
Any advice on how best to implement the above solution?
What are the potential challenges and stumbling blocks?
If you had the above challenge, what would you do to solve the problem?

Thanks!
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Question by:JohnAeris
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7 Comments
 
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Accepted Solution

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mcmahon_s earned 500 total points
ID: 38787043
I have done exactly this same thing in the past. I used the current report users name as the key to the user access table eg. DOMAINNAME\UserId. This can easily be accessed via a default value for a hidden parameter using the built-in field User!UserId and then included in your queries in the WHERE statement.

So the user access table would have the userid and department for example.
DOMAIN\Bob,   Admin
DOMAIN\Bob,   Finance
DOMAIN\Bill,    Admin
DOMAIN\Mary,  Admin

And a query would be something like

SELECT T.data FROM table T
  INNER JOIN UserAccess U ON T.Department = U.Department
WHERE U.UserId=@UserName

Obviously if the department field is not in the table you are looking at you need to find a way to join it to the useraccess table.
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Author Comment

by:JohnAeris
ID: 38800588
Thanks mcmahon_s!

I'm in the process of building the table. Turns out there are over 10,000 users! Will update once I've made progress.
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Author Comment

by:JohnAeris
ID: 38805410
mcmahon_s. where would you put the query you wrote above? How would this stop access to a report?
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Expert Comment

by:mcmahon_s
ID: 38805683
It doesn't stop access to the report itself, it filters the rows they are able to see on the report. Based on your description above it would only allow them to see the patients they have permission for.
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Author Comment

by:JohnAeris
ID: 38806074
That's the plan! users will be checked against the team information that they can access, if they have permission they can view the rows of data.

So, where do I put the query? Does it live in the dataset?
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LVL 4

Expert Comment

by:mcmahon_s
ID: 38809403
Yes, you need to join the user table to your main query and add the where condition in the dataset for each report.
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Author Closing Comment

by:JohnAeris
ID: 38851387
mcmahon_s: you're a star!

All sorted and working. Thanks!
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