|
@@ -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')
|
|
|
- [<Person: John Doe>, <Person: Jane Doe>, ...]
|
|
|
+ >>> 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
|
|
|
<queryset-defer>` 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.
|
|
|
...
|