IF funcionality in SQL server views

Hi,

I am working with several tables and views. My goal is to create a view
with critical reporting data from these tables and views. I have
managed to get the majority of data but am having difficultly with the
final step.

For a record in the master dataview, add additional record information
by appending data from another view based on the first 2 letters of the
document number and the document number i.e

Document number
SC11111
DN22222
SI33333

For SC11111 look up data in Sales Credit table/view for doument SC11111
and append to that line
For DN22222 look up data in Delivery Note table/view for document
DN22222and append to that line
For SI33333 look up data in Sales Invoice table/view for document
SI33333 and append to that line

Any help appreciated.

Thank you in advance,

RajCan I just clarify what you're trying to do...

as I understand it, you want to select from different tables/views
depending on what the data is.

if so, could you left join on all 3 tables, then using join filters and
using isnull() in your select you could just get the data from the
relevant table.

Otherwise, could you explain a bit further what the problem is.

Cheers
Will