Hi, I understand (and I have read) that there have been changes and discussions about the way, pg_dump treats SERIAL columns in the latest versions(8.x). However, I have not been able to get a document explaining exactly what the changes are and what's the reasoning behind it, not even in the documentation. Is there such a thing ? At the moment, I am kind of stuck because of this. Here is my situation : I have a 8.1 PG server (on Ubuntu) with my development databases. I have created command scripts generating databases creation scripts using pg_dump, to be able to store the db creation scripts in my source control (subversion). I have used pg_dump 8.1.4 as it generates a script with SERIAL columns, when pg _dump 8.2.0 generates a script with SEQUENCEs for columns created as SERIAL. I need this to be able to maintain easily an identical Derby database. It worked well till I created a new PG server on my laptop (to be able to work while I was away). I decided to install a 8.2 server (to test the new version, for the day, Ubuntu will package 8.2). And that started my problem: even pg_dump 8.1.4 will create a script WITH SEQUENCEs (on the 8.2 server). And if I run this script (with SEQUENCEs) on the 8.1 server to create a new db, extracting the script with pg_dump will still generate SEQUENCEs ! (and to add to the confusion PG Admin will still show SERIAL in the colums definition). So my question is: can I create a script with SERIAL to be able to compare my new database (from 8.2) with my old (8.1) db script in subversion. Thanks for taking the time to read all this. I hope that somebody can at least give me some pointers about pg_dump and SERIAL. Cheers, L@u The Computing Froggy ___________________________________________________________________________ Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses http://fr.answers.yahoo.com