tags:

views:

205

answers:

1
+2  Q: 

Can SQLAlchemy update the table structure ?

Hello,

I am working on my first pylons + SQLAlchemy app (I'm new to both).

As I change my mind on the table structure, I wish there was a similar function to metadata.create_all(), that checks if there are new columns definitions and create theme in the database.

Does such a function exist ?

+2  A: 

I'm not (yet) a SQLAlchemy user, but I've heard good things about sqlalchemy-migrate. The general term of the problem you have is "schema migration", I'm sure a google search containing these terms will help you further.

piquadrat  2009-11-16 13:52:33
Thank you, I wasn't aware of this term, nor of the existence of such a tool for sqlalchemy-migrate. However, it would be much straightforward for me to just override whatever "create" method in a subclass. Maybe override the Table::create method to alter its structure if it aleready exists in the database.
ychaouche  2009-11-16 18:07:35

related questions

Remove Quotes and Commas from a String in MySQL
What's the best way of converting a mysql database to a sqlite one?
How do you manage databases in development, test, and production?
Multiple foreign keys?
Add 1 to a field (MySQL)
Issues using MS Access as a front-end to a MySQL database back-end?
Bigger than a char but smaller than a blob
How do I retrieve my MySQL username and password?
Long-time LAMP Developer moving to VB.NET
How do I Concatenate entire result sets in MySQL?
Full complete MySQL database replication? Ideas? What do people do?
SQL: Distribution of table in time
SQLite vs MySQL
How do I create a new Ruby on Rails application using MySQL instead of SQLite?
Multiple Updates in MySQL
MySQL/Apache Error in PHP MySQL query
What all do I need to escape when sending a (My)SQL query?
Auto Generate Database Diagram MySQL
Mechanisms for tracking DB schema changes
How big can a MySQL database get before performance starts to degrade.
Python and MySQL
SQL Server 2005 implementation of MySQL REPLACE INTO?
How to export data from SQL Server 2005 to MySQL
Throw Error In MySQL Trigger
Binary Data in MySQL