Re: Database schema diff

On Tue, Oct 13, 2015 at 5:48 PM, Michal Novotny <michal.novotny@trustport.com> wrote:

Hi guys,

I would like to ask you whether is there any tool to be able to compare
database schemas ideally no matter what the column order is or to dump
database table with ascending order of all database columns.

For example, if I have table (called table) in schema A and in schema B
(the time difference between is 1 week) and I would like to verify the
column names/types matches but the order is different, i.e.:

Schema A (2015-10-01) |  Schema B (2015-10-07)
                      |
id int                |  id int
name varchar(64)      |  name varchar(64)
text text             |  description text
description text      |  text text

Is there any tool to compare and (even in case above) return that both
tables match? Something like pgdiff or something?

This should work for all schemas, tables, functions, triggers and all
the schema components?

I've used pg_dump --split for this purpose a number of times (it requires patching pg_dump[1]).

The idea is to produce the two database's schema dumps split into individual files per database object, then run diff -r against the schema folders.  This worked really well for my purposes.

This will however report difference in columns order, but I'm not really sure why would you like to ignore that.

--

Alex

[1] http://www.postgresql.org/message-id/AANLkTikLHA2x6U=q-t0j0YS78txHFmdtyxJfsrsRcLqN@mail.gmail.com