Hi Frank
Thanks for your response
Purpose is to run query regularly at end of every week and find any email addresses which were changed during week.. then to manually update an external email marketing list with any addresses which were changed.
I intended to use something like: WHERE DateDiff(dd,T0.updateDate,GetDate()) <7 to find updated emails from OCPR and it was when testing your query in this way that I discover that when OCRD is updated the update to OCPR is no longer being returned.
Appreciate your help with this.
K