Delete script SQL Server 2008

Question

Here is a situation that I am trying to resolve. I have a table that is loaded with duplicates. It happened because similar rows were loaded from two different sources. That is

Answer 1

1. I think the key word INTERSECT isn't used properly. The explanation is below. You could follow the link to get detail.

EXCEPT returns any distinct values from the left query that are not also found on the right query. INTERSECT returns any distinct values that are returned by both the query on the left and right sides of the INTERSECT operand

http://msdn.microsoft.com/zh-cn/library/ms188055.aspx

1. To achieve your perpose, you could try the command merge.

   ;
   merge into #Clevland as target
   using  #Ohio as source
   on (target.UID = source.UID) -- you could add ADDRESS,City,State,Zip
   when not matched
      insert into target (UID) values (source.UID)
   ;
   

Wish this will help.