Skip to main content

Database schema migration tool

Project description

Design

There are plenty of tools to approach the problem of database schema migration. Here is how sqlturk is different:

  • one-way migrations. There is no way to “rollback” a migration. In my experience, “downgrade” scripts are almost never used yet writing them adds considerable burden onto the developer. Their presense may add a false sense of security – since they used so rarely there is a big chance they will not work properly anyway.

  • Python-agnostic. Sqlturk operates in terms of SQL DDL. It does not work in terms of SQLAlchemy ORM models or Django’s and thus it can be used in a much wider context. Plain SQL also means that a competent DBA who knows nothing about Python can author these scripts. Or they could be generated automatically by another tool.

API usage

Short example:

>>> from sqlturk.migration import MigrationTool
>>> tool = MigrationTool('sqlite:///:memory:', migration_dir='testmigrations')
>>> tool.install() # create a database table to track schema changes
>>> tool.find_migrations()
['1_foobar', '2_foobar_data', '10_foobar_delete']
>>> tool.run_migrations()
>>> tool.find_migrations() # check that all migrations have been applied
[]

Example migration scripts can be found in the sqlturk’ source.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

sqlturk-0.9.tar.gz (3.1 kB view hashes)

Uploaded Source

Built Distribution

sqlturk-0.9-py2.5.egg (6.6 kB view hashes)

Uploaded Source

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page