#25427: Trying to do a full text search query on a database field (non model
field), the .annotate(val=RawSQL(...)).filter(val=VAL1) doesn't work.
-------------------------------------+-------------------------------------
Reporter: vladiibine | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution:
Keywords: QuerySet.extra | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by rpkilby):
We have a very similar usecase, and are running into the same issue when
annotating with a RawSQL query. Noticed something very strange about the
generated SQL.
Using annotate + extra, you get the expected query
{{{
>>> print models.User.objects.only('id') \
>>> .annotate(val=RawSQL('select 3', params=[])) \
>>> .extra(where=['val=%s'], params=[3]) \
>>> .query
SELECT "accounts_user"."id", (select 3) AS "val" FROM "accounts_user"
WHERE (val=3)
}}}
If you try to use filter, and inspect with `sql_with_params`, you'll
notice that `val` is substituted with the contents of the RawSQL query.
{{{
>>> q = models.User.objects.only('id') \
>>> .annotate(val=RawSQL('select 3', params=[])) \
>>> .filter(val=3).query
>>> print q.sql_with_params()[0]
SELECT "accounts_user"."id", (select 3) AS "val" FROM "accounts_user"
WHERE (select 3) = %s
}}}
Also, this happens:
{{{
>>> print q.sql_with_params()[1]
(3, 3)
>>> print q.sql_with_params()[1]
(3, 3, 3, 3)
>>> print q.sql_with_params()[1]
(3, 3, 3, 3, 3, 3)
>>> print q.sql_with_params()[1]
(3, 3, 3, 3, 3, 3, 3, 3)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/25427#comment:2>
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