I am trying to build a column using the formula below but can't seem to get the null portion to work correctly. I want the new column to read if the first update date is null then use the last update date else use the first update date. Below is what i am using. Any help would be greatly appreciated.
iif(IsNull([move_event_first_update_dt],([move_event_last_update_dt]),[move_event_first_update_dt]))