Limit to 1 row per data item value

[aaspden]

Hi guys. I've been reading all kinds of information about rank, counting, distinct and singletons online but I can't seem to find an exact match to what I'm after. Grouping seems to display the info correctly, but when I export as XML, the duplicate records return. I have an ID column that can have duplicates or not, I want to limit the returned rows per unique ID to 1. I can clearly see the reason for the duplicates is due to the corresponding information that I am NOT including in my report output. Thanks for any help!

[sdf]

do you just need to extract the unique IDs or you need to extract 1 row per unique ID?
Is your report based on a list? maybe you can use the max() function on the columns that causes the IDs to duplicate.