It takes 2 hours to dump a backup

Iterating over the whole database in Perl will take even longer. So doing the dump on both DB's and comparing checksums of the dumps is probably faster than any full Perl solution.

There's also pg-comparator, which might be worth looking at.

Another possible trick is to aggregate all rows of a table into a single one using array_agg or one of its companions, and implement a checksum in postgres itself (or maybe there's one available already?). That way less data needs to be transferred out of the DB, making the process much faster.

Perl 6 - second systems done right

In reply to Re: Verifying 2 databases are in sync with brute force by moritz
in thread Verifying 2 databases are in sync with brute force by dwhite20899

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