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.
You can install pyDAL using pip:
pip install pyDAL
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
A little taste of pyDAL features:
- Transactions
- Aggregates
- Inner Joins
- Outer Joins
- Nested Selects
pyDAL actually support these databases:
- sqlite
- postgresql
- mysql
- mssql
- db2
- firebird
- sybase
- oracle
- informix
- teradata
- sapdb
- ingres
- cubrid
- imap
- mongodb
pyDAL is released under the BSD-3c License.
For further details, please check the LICENSE file.