Re: need SQL logic to find out way's to Implement check sum to validate table data is migrated correctly - Mailing list pgsql-general

Hi

Why do you need checksums? Can you not employ a full outer join? My though behind this is that checksumming is quite costly cpuwise and you have to fiddle with each and every relevent column, be it as part of the checksum string be it as part of the joiner. The joiner would have the advantage that you could, if you wanted, also implement logic to tell you precisely in which columns the difference is encountered.

Kind regards

Thiemo

Hi 

Need SQL logic/different approach method's  to find out way's 

a) to Implement check sum to validate table data is migrated correctly  

Any guidance

Regards

Bharani SV