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Re: MSSQL to PostgreSQL

From: Merlin Moncure <mmoncure(at)gmail(dot)com>
To: Thom Brown <thombrown(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: MSSQL to PostgreSQL
Date: 2009-07-31 15:31:37
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-general
On Fri, Jul 31, 2009 at 9:17 AM, Thom Brown<thombrown(at)gmail(dot)com> wrote:
>> That's going to depend a lot on how many features of the database you
>> were using...especially higher level features like stored procedures.
>> Converting the schema and the data shouldn't be too bad -- there are a
>> number of relatively easy ways to do it including microsoft DTS
>> levering the pg odbc driver.
>> The biggest change is going to be getting used to the new tools...if
>> you haven't already, i'd highly recommend mastering psql (don't lean
>> too much on pgadmin) and learning basic administration tasks like
>> restarting the database while active, killing particular backends,
>> backup strategies, etc.  If the sql server installation is 2000 or
>> older, you should be able to port most things pretty easily except for
>> any t-sql procedures.  PostgreSQL supports functions which are a
>> little different so some of the things you used to do in t-sql you may
>> have to do in sql scripts and an external scheduler such as cron.
>> Many things in PostgeSQL are easier than you might be used's
>> got superior concurrency handing and a much better type system.  Good
>> luck!
>> merlin
> Learning PostgreSQL isn't a problem since most of our database servers are
> Postgres.  It's just an old database we want to convert.
> Thankfully we don't rely on DTS but I think there may be some refactoring of
> stored procedures into functions as some return multiple datasets.

you meant to say t-sql?  DTS is data transformation services, you can
use it to do the one time schema and data converesions (it's not
perfect, but can be a time saver).


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