p15693087
/
django
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Capitalize SQL keywords

This commit is contained in:
David Sanders 2014-02-20 11:26:59 -07:00
parent cb844497d0
commit 6dfd02f88c
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
docs/topics/db/sql.txt
View File

@ -105,13 +105,13 @@ Index lookups
``raw()`` supports indexing, so if you need only the first result you can ``raw()`` supports indexing, so if you need only the first result you can
write:: write::
>>> first_person = Person.objects.raw('SELECT * from myapp_person')[0] >>> first_person = Person.objects.raw('SELECT * FROM myapp_person')[0]
However, the indexing and slicing are not performed at the database level. If However, the indexing and slicing are not performed at the database level. If
you have a large number of ``Person`` objects in your database, it is more you have a large number of ``Person`` objects in your database, it is more
efficient to limit the query at the SQL level:: efficient to limit the query at the SQL level::
>>> first_person = Person.objects.raw('SELECT * from myapp_person LIMIT 1')[0] >>> first_person = Person.objects.raw('SELECT * FROM myapp_person LIMIT 1')[0]
Deferring model fields Deferring model fields
---------------------- ----------------------
@ -274,11 +274,11 @@ names, which means you end up with a ``list`` of values, rather than a
Here is an example of the difference between the two:: Here is an example of the difference between the two::
>>> cursor.execute("SELECT id, parent_id from test LIMIT 2"); >>> cursor.execute("SELECT id, parent_id FROM test LIMIT 2");
>>> cursor.fetchall() >>> cursor.fetchall()
((54360982L, None), (54360880L, None)) ((54360982L, None), (54360880L, None))
>>> cursor.execute("SELECT id, parent_id from test LIMIT 2"); >>> cursor.execute("SELECT id, parent_id FROM test LIMIT 2");
>>> dictfetchall(cursor) >>> dictfetchall(cursor)
[{'parent_id': None, 'id': 54360982L}, {'parent_id': None, 'id': 54360880L}] [{'parent_id': None, 'id': 54360982L}, {'parent_id': None, 'id': 54360880L}]