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Fixed #14185 - improved example SQL for 'select' example. 

Thanks to Trindaz for the suggestion.

Also fixed some references to 'lede' which is no longer part of the
example Blog model.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@13652 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Luke Plant 2010-08-28 11:23:54 +00:00
parent 34740625ff
commit c00f35ae0d
1 changed files with 5 additions and 4 deletions
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9
docs/ref/models/querysets.txt
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@ -703,9 +703,10 @@ of the arguments is required, but you should use at least one of them.
greater than Jan. 1, 2006.
Django inserts the given SQL snippet directly into the ``SELECT``
statement, so the resulting SQL of the above example would be::
statement, so the resulting SQL of the above example would be something
like::
SELECT blog_entry.*, (pub_date > '2006-01-01')
SELECT blog_entry.*, (pub_date > '2006-01-01') AS is_recent
FROM blog_entry;
@ -859,7 +860,7 @@ deferred field will be retrieved from the database if you access that field
You can make multiple calls to ``defer()``. Each call adds new fields to the
deferred set::
# Defers both the body and lede fields.
# Defers both the body and headline fields.
Entry.objects.defer("body").filter(rating=5).defer("headline")
The order in which fields are added to the deferred set does not matter. Calling ``defer()`` with a field name that has already been deferred is harmless (the field will still be deferred).
@ -919,7 +920,7 @@ immediately; the remainder are deferred. Thus, successive calls to ``only()``
result in only the final fields being considered::
# This will defer all fields except the headline.
Entry.objects.only("body", "lede").only("headline")
Entry.objects.only("body", "rating").only("headline")
Since ``defer()`` acts incrementally (adding fields to the deferred list), you
can combine calls to ``only()`` and ``defer()`` and things will behave