sqlquery 0.0.1

Composing SQL queries with python.

py-sql-query is a basic and pre-alpha SQL translation layer in python. You construct queries using mainly python constructs which later can be serialized to a SQL query.

Examples

A simple select statement

>>> from sqlquery.queryapi import select
>>> select("id").on_table("users").where(("id__eq", 2)).sql()
(u'SELECT `a`.`id` FROM `users` AS `a` WHERE (`a`.`id` <=> %s)', (2,))

A simple update statement

>>> from sqlquery.queryapi import select
>>> update(username="john").on_table("users").where(("id__eq", 2)).sql()
(u'UPDATE `users` AS `a` SET `a`.`username` = %s WHERE (`a`.`id` <=> %s)', ('john', 2))

A simple insert statement

>>> from sqlquery.queryapi import select
>>> insert(username="john", id=4).on_table("users").sql()
(u'INSERT INTO `users` (`username`, `id`) VALUES (%s, %s)', ('john', 4))

A simple order by statement

>>> from sqlquery.queryapi import select
>>> select("id").on_table("users").order_by("id").sql()
(u'SELECT `a`.`id` FROM `users` AS `a` ORDER BY `a`.`id`', ())

A more involved statement

>>> from sqlquery.queryapi import select
>>> select(
      "username", "id", "contactinfo.address"
    ).on_table("users").join(
      "contactinfo",
      "id",
    ).where(
      ('id__in', [1, 2, 3, 4]), ('contactinfo.country__eq', 'US')
    ).limit(10).offset(10).order_by("id").sql()
(u'SELECT `a`.`username`, `a`.`id`, `b`.`address` FROM `users` AS `a` INNER JOIN `contactinfo` AS `b` ON `a`.`id` = `b`.`id` WHERE (`a`.`id` IN (%s,%s,%s,%s)) AND (`b`.`country` <=> %s) ORDER BY `a`.`id` OFFSET %s LIMIT %s',
 ([1, 2, 3, 4], 'US', 10, 10))