Re: binary vs. txt dumps with pg

Dick Visser <dick.visser@tienhuis.nl> writes:
> Since I use rysnc to a remote host for backups, I have created a
> script hat dumps each db to a file, and then checks if the dump from
> yesterday is different.

> I have been fiddling with all kinds of techniques to accomplish this.
> The only way that seems to work is to make txt based dumps, and strip
> out all the comments and empty lines:

Have you retested this assumption recently?  We got rid of the OIDs and
stuff in the default comments, so I think that you should be able to
just diff the text dump files without any weird processing.

> When I try to dump to custom format, the dumps are *not* the same
> anymore, even though the data has *not* changed.

There's a timestamp in the custom format file header.

            regards, tom lane