diff --git a/docs/topics/db/sql.txt b/docs/topics/db/sql.txt index b909be938e..5ec048528a 100644 --- a/docs/topics/db/sql.txt +++ b/docs/topics/db/sql.txt @@ -25,8 +25,10 @@ return model instances: .. method:: Manager.raw(raw_query, params=None, translations=None) -This method method takes a raw SQL query, executes it, and returns model -instances. +This method method takes a raw SQL query, executes it, and returns a +:class:`~django.db.models.query.RawQuerySet` instance. This +:class:`~django.db.models.query.RawQuerySet` instance can be iterated +over just like an normal QuerySet to provide object instances. This is best illustrated with an example. Suppose you've got the following model:: @@ -37,8 +39,10 @@ This is best illustrated with an example. Suppose you've got the following model You could then execute custom SQL like so:: - >>> Person.objects.raw('SELECT * from myapp_person') - [, , ...] + >>> for p in Person.objects.raw('SELECT * FROM myapp_person'): + ... print p + John Smith + Jane Jones .. admonition:: Model table names @@ -110,7 +114,7 @@ Deferring model fields Fields may also be left out:: - >>> people = Person.objects.raw('SELECT id, first_name FROM myapp_person'): + >>> people = Person.objects.raw('SELECT id, first_name FROM myapp_person') The ``Person`` objects returned by this query will be :ref:`deferred ` model instances. This means that the fields that are omitted @@ -142,7 +146,7 @@ of people with their ages calculated by the database:: >>> people = Person.objects.raw('SELECT *, age(birth_date) AS age FROM myapp_person') >>> for p in people: - ... print "%s is %s." % (p.first_name, p.age) + ... print "%s is %s." % (p.first_name, p.age) John is 37. Jane is 42. ...