How to compare data between two table in different databases using Sql Server 2008?

Question

I have two database\'s, named DB1 and DB2 in Sql server 2008. These two database\'s have the same tables and same table data also. However, I want to check if there are an

Answer 1

I'v done things like this using the Checksum(*) function

In essance it creates a row level checksum on all the columns data, you could then compare the checksum of each row for each table to each other, use a left join, to find rows that are different.

Hope that made sense...

Better with an example....

select *
from 
( select checksum(*) as chk, userid as k from UserAccounts) as t1
left join 
( select checksum(*) as chk, userid as k from UserAccounts) as t2 on t1.k = t2.k
where t1.chk <> t2.chk