Thread: Pg schema diff tools Was: [ANNOUNCE] == PostgreSQL Weekly News - April 08 2007 ==

Hi,

David Fetter wrote in the weekly news:
> Another PostgreSQL Diff Tool 1.0.0_beta20 released.
> http://pgfoundry.org/projects/apgdiff/

Why is it 'another' one? What others exist? (Specifically, are there
ones, which don't depend on java?)

Regards

Markus

On Monday 09 April 2007 05:35, Markus Schiltknecht wrote:
> Hi,
>
> David Fetter wrote in the weekly news:
> > Another PostgreSQL Diff Tool 1.0.0_beta20 released.
> > http://pgfoundry.org/projects/apgdiff/
>
> Why is it 'another' one? What others exist? (Specifically, are there
> ones, which don't depend on java?)
>

Theres this one which uses tcl:
https://sourceforge.net/projects/pgdiff

And this one which is written in perl:
http://gborg.postgresql.org/project/pgdiff/projdisplay.php

And this one which is commercial but actually works :-P
http://sqlmanager.net/en/products/postgresql/dbcomparer

And I think there are some others floating around...

--
Robert Treat
Build A Brighter LAMP :: Linux Apache {middleware} PostgreSQL

Hi,

thanks for the links. I've had a quick look at the first two and comment
my findings:

Robert Treat wrote:
> Theres this one which uses tcl:
> https://sourceforge.net/projects/pgdiff

Seems outdated: 2002, PostgreSQL 7.2, ~1500 lines of code. (which I
don't really understand, I simply don't know TCL, sorry.)

> And this one which is written in perl:
> http://gborg.postgresql.org/project/pgdiff/projdisplay.php

Yeah, perl is better with me ;-)  Anyway, 2003 also isn't that
up-to-date either. ~770 lines of code, but that might very well be
sufficient in many cases.

And as David Fetter pointed out, it's dangerous to rely on such tools,
as they can never replace a change control process.

Regards

Markus

On 4/10/07, Markus Schiltknecht <markus@bluegap.ch> wrote:
> Robert Treat wrote:
> > Theres this one which uses tcl:
> > https://sourceforge.net/projects/pgdiff
>
> Seems outdated: 2002, PostgreSQL 7.2, ~1500 lines of code. (which I
> don't really understand, I simply don't know TCL, sorry.)
>
> > And this one which is written in perl:
> > http://gborg.postgresql.org/project/pgdiff/projdisplay.php
>
> Yeah, perl is better with me ;-)  Anyway, 2003 also isn't that
> up-to-date either. ~770 lines of code, but that might very well be
> sufficient in many cases.
>
> And as David Fetter pointed out, it's dangerous to rely on such tools,
> as they can never replace a change control process.

no, but it's good to double check your change control process with a
good diff tool.  the sqlmanager tool is pretty good but not perfect.
That being said, I think a hand crafted pl/pgsql script is probably
the way to go.

merlin