pyDAL

pyDAL is a pure Python Database Abstraction Layer.

It dynamically generates the SQL in real time using the specified dialect for the database back end, so that you do not have to write SQL code or learn different SQL dialects (the term SQL is used generically), and your code will be portable among different types of databases.

pyDAL comes from the original web2py's DAL, with the aim of being wide-compatible. pyDAL doesn't require web2py and can be used in any Python context.

Installation

You can install pyDAL using pip:

pip install pyDAL

Usage and documentation

Here is a quick example:

>>> from pydal import DAL, Field
>>> db = DAL('sqlite://storage.db')
>>> db.define_table('thing',Field('name'))
>>> db.thing.insert(name='Chair')
>>> query = db.thing.name.startswith('C')
>>> rows = db(query).select()
>>> print rows[0].name
Chair
>>> db.commit()

The complete documentation is available on http://www.web2py.com/books/default/chapter/29/06/the-database-abstraction-layer

What's in the box?

A little taste of pyDAL features:

Transactions
Aggregates
Inner Joins
Outer Joins
Nested Selects

Which databases are supported?

pyDAL actually support these databases:

sqlite
postgresql
mysql
mssql
db2
firebird
sybase
oracle
informix
teradata
sapdb
ingres
cubrid
imap
mongodb

License

pyDAL is released under the BSD-3c License. For further details, please check the LICENSE file.

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