#28727: sqlite: CAST to DATE causes error
-------------------------------------+-------------------------------------
Reporter: direx | Owner: nobody
Type: Bug | Status: new
Component: Database | Version: 1.11
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 |
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When trying to cast a date object to a `DateField` in `annotate` an
exception is raised:
{{{
import datetime
from django.contrib.auth.models import User
from django.db import models
from django.db.models.functions import Cast
User.objects.all().annotate(today=Cast(datetime.date.today(),
models.DateField()))
...
TypeError: expected string or buffer
}}}
This only seems to happen with SQLite, MySQL works as expected.
FYI, this is the SQL which is generated for SQLite:
{{{
SELECT "auth_user"."id", "auth_user"."password", "auth_user"."last_login",
"auth_user"."is_superuser", "auth_user"."username",
"auth_user"."first_name", "auth_user"."last_name", "auth_user"."email",
"auth_user"."is_staff", "auth_user"."is_active",
"auth_user"."date_joined", CAST(2017-10-20 AS date) AS "today" FROM
"auth_user"
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/28727>
Django <https://code.djangoproject.com/>
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