#29697: Missing FROM-clause entry for table
-------------------------------------+-------------------------------------
Reporter: Dmitry | Owner: nobody
Type: Bug | Status: new
Component: Database | Version: 2.1
layer (models, ORM) |
Severity: Normal | Keywords:
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
python version: 3.6.6
database backend: psycopg2 v2.7.5
Hi. I have next models in my project:
{{{
class Status(models.Model):
...
company = models.ForeignKey(
'customauth.Company',
on_delete=models.CASCADE)
key = models.SlugField(max_length=255)
...
class User(models.Model):
...
company = models.ForeignKey(
'customauth.Company',
on_delete=models.CASCADE,
related_name='employees',
db_index=True)
permissions = postgres.fields.JSONField(blank=True, default=list)
is_superuser = models.BooleanField(default=False)
...
class Company(models.Model):
...
}}}
When trying execute next code:
{{{
Status.objects.filter(
Q(company__employees__is_superuser=True) |
~Q(company__employees__permissions__has_key=Concat(Value('records.'),
'key', Value('.denied'))),
company__employees__pk=4)
}}}
raising error:
{{{
Traceback (most recent call last):
File "C:\Users\user\py366-tpr\lib\site-
packages\django\db\backends\utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: missing FROM-clause entry for table "u1"
LINE 1: ...status" U0 INNER JOIN "customauth_user" U2 ON (U1."id" = ...
^
}}}
SQL after call .query() look like this:
{{{
SELECT *
FROM records_status
INNER JOIN customauth_company ON (records_status.company_id =
customauth_company.id)
INNER JOIN customauth_user ON (customauth_company.id =
customauth_user.company_id)
WHERE
(
(
customauth_user.is_superuser = True OR
NOT (
records_status.company_id IN (
SELECT U2.company_id
FROM records_status U0
INNER JOIN customauth_user U2 ON (U1.id =
U2.company_id)
WHERE (
U2.permissions ? (CONCAT('records.', CONCAT(U0.key,
'.denied'))) AND
U2.id = (customauth_user.id)
)
)
)
) AND
customauth_user.id = 4 AND
records_status.company_id = (customauth_user.company_id)
)
ORDER BY records_status.key ASC;
}}}
It is not clear where U1 alias comes from.
--
Ticket URL: <https://code.djangoproject.com/ticket/29697>
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