Comparison for 75 tables in two different SQL Server databases

Question

I need to do a column by column, row by row comparison for 75 tables in two different databases. The tables contain up to 165 million records.

I need to determine if there are any missing records, and we need to identify any columns that contain different values. Potential problems include decimal errors.

Answer 1

There are many ways to do this:

• You can create linked server to another server and do comparison using EXCEPT, LEFT OUTER JOIN etc. Refer to Sql comparison with two tables
• You can use tablediff.exe utility to do comparison between tables. Refer to Tablediff.exe
• You can use third party tools like Redgate Data Compare. Refer to Sql data compare