The filter operation is always a single operation. You have several options:
- if you do a retrieve from database, do the filtering in the xpath of the retrieve. → the easiest imho
- Do each filter seperately, create a new list and add the results of each filter to this list. To get unique values, you can then union the list with itself.
- There are probably other option i did not think of.
I hope this helps.
The xpath for option one would be:
[profile_decile = ‘Decile 10’ or profile_decile = ‘Decile 9’ or profile_decile = ‘Decile 8’]