Hi All --
I have been struggling with how to apply two sets of rules to a particular column, and have had a bear of a time. Here is what I want to do.
Scenario 1: I created groups based on my information. The group is designated by the first column (Tile_Num).
If you look at the column labeled Concat_Transaction ID -- three of the rows have data and three are null. For this group (and this instance_ I just want to keep the three rows with data (2017-Q2_10631). The ones with NULL can be discarded.
Scenario 2: For Tile_Num 68 - If the Concat_Transaction ID has no data in it, then just keep the first row of data.

In this scenario, I would expect to just be able to return the first row listed.
I cannot for the life of me figure out how to write this filter. Data is attached.
Thanks for your help.
Seth