Pushing record selection to database.

I am using a Crystal report for bursting through publication.
My requirement is to filter the report on a date field where the report picks up all the records that were updated since u2018last report refresh dateu2019 (datadate function)
I am trying to use record selection to filter the records like-
{Query.modifyDt}>datadate
1. I get the desired results but I believe this is acting like a report level filter since I canu2019t see the where clause in u2018Show SQLu2019 under database menu. I am using Crystal report 2008 with a universe based on Teradata.
2. When I use the direct tables/views instead of a universe I can see the where clause in the SQL which indicates that the filtering is being pushed to the database.
Is the u2018pushing record selection to databaseu2019 available with universe connection? OR only when direct tables are used?
I also noticed that in the formula editor, the u2018SQL expression fieldsu2019 is not available when I use universe. Are there any drivers that I could be missing or which needs an update. (ODBC Driver For Teradata Version: 12.0.0.2)
Thanks in advance for your help!
Girish
Edited by: girishks11 on Sep 26, 2011 8:55 PM

Hi Girish,
When reporting off a Universe,the record selection is done locally unless of course, you've defined filters at the Universe level.
So, to push 'most' of the record selection to the database, I would suggest that you connect directly to the database.
And to clear some air about SQL Expressions, you can indeed write a SQL Expr in CR to fetch a single field not more!
-Abhilash

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I am learning about the benefits of SQL commands, in terms of efficiency.
My database is a SQL databse. Crystal 10 runs off of a connected server. My reports connect to the database using Microsoft OLE DB Provider for SQL Server.
I do not use explicitly defined SQL commands in my report. Rather, I have specificed my record selection criteria in the record selection formula. However, The Complete Reference to Crystal Reports XI indicates that if your record selection formula is coded within the underlying SQL Query in the WHERE statement, that record selection occurs on the database server (as opposed to the Crystal server).
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Also, another huge performance gainer with SQL Commands is if you can do aggregation (sum, max, etc.) in them and only return summary data. I'm not sure how good Crystal is at pushing this kind of logic to the DBMS (if it can do it at all).
Personally, I'm a big fan of basing reports off of SQL Commands due to the efficiencies that can be gained.
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Database DLL error on editing the record selection formula?

Post Author: Aravind
CA Forum: Older Products
Hi All,I recently edited the record selection formula of an old report and since then the report is issuing me an "Error detected by database DLL" error.The report was running fine earlier and still continues to run fine if I undo the changes. Earlier, the records were selected based on a 'date' field and I edited the formula to select records based on another date field, but the report doesn't work.The report runs fine on my local PC using Crystal Reports, but web based reporting fails with the error message. The data is selected from a view and the date parameters I talked about are the fields in the same view.This view has around five date parameters and the report runs fine for all of them, except one date field.Any pointers are appreciated.Crystal reports version is 8.5. Regards,Aravind.

Post Author: DPowell
CA Forum: Older Products
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