Postgres pg_dump dumps database in a different order every time

Posted by behrk2 on Stack Overflow See other posts from Stack Overflow or by behrk2
Published on 2010-02-01T18:04:46Z Indexed on 2010/04/22 7:03 UTC
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Hello,

I am writing a PHP script (which also uses linux bash commands) which will run through test cases by doing the following:

I am using a PostgreSQL database (8.4.2)...

1.) Create a DB 2.) Modify the DB 3.) Store a database dump of the DB (pg_dump)

4.) Do regression testing by doing steps 1.) and 2.), and then take another database dump and compare it (diff) with the original database dump from step number 3.)

However, I am finding that pg_dump will not always dump the database in the same way. It will dump things in a different order every time. Therefore, when I do a diff on the two database dumps, the comparison will result in the two files being different, when they are actually the same, just in a different order.

Is there a different way I can go about doing the pg_dump?

Thanks!

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