How can I use the Rownum/Customized SQL query in a Mapping?

Hi,
* I need to use a Rownum for populating one of the target field? How to create a mapping with Rownum?
* How can I use an Dual table in OWB mapping?
* Can I write Customized SQL query in OWB? How can I achieve this in a Mapping?
Thanks in Advance
Kishan

Hi Niels,
As I'm sure you know, the conundrum is that Reports doesn't know how many total pages there will be in the report until it is all done formatting, which is too late for your needs. So, one classical solution to this problem is to run the report twice, storing the total number of pages in the database using a format trigger, and throwing away the output from the first run when you don't know the total number of pages.
Alternatively, you could define a report layout so that the number of pages in the output is completely predictable based upon, say, the number of rows in the main query. E.g., set a limit of one, two, ... rows per page, and then you'll know how many pages there will be simply because you can count the rows in a separate query.
Hope this helps...
regards,
Stewart

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