>>Nothing is complex here. Check this page for better understanding of my idea:
>>
>>http://pratchev.blogspot.com/2010/02/refactoring-ranges.html
>
>Thanks for the reference

Assuming the rows in the date order from the earlier date to the latest date, can you mark rows you'd like to delete?

Created
Uploaded
Completed
Completed
Assigned
Completed -- the query with Grp=0 should delete it
Completed -- the query with Grp=0 should delete it
Completed -- the latest date