#29291: Conditional expressions and ~Q queries
-------------------------------------+-------------------------------------
Reporter: Bo Marchman | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 2.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Bo Marchman):
This is on Postgres 9.6.8.
For `qs1`:
{{{
SELECT "test_app_application"."id",
CASE
WHEN NOT ("test_app_score"."reviewed" = TRUE
AND "test_app_score"."reviewed" IS NOT NULL) THEN
TRUE
ELSE FALSE
END AS "needs_review"
FROM "test_app_application"
LEFT OUTER JOIN "test_app_score" ON ("test_app_application"."id" =
"test_app_score"."application_id")
WHERE CASE
WHEN NOT ("test_app_score"."reviewed" = TRUE
AND "test_app_score"."reviewed" IS NOT NULL) THEN TRUE
ELSE FALSE
END = TRUE
}}}
And `qs2`:
{{{
SELECT "test_app_application"."id"
FROM "test_app_application"
WHERE NOT ("test_app_application"."id" IN
(SELECT U1."application_id"
FROM "test_app_score" U1
WHERE U1."reviewed" = TRUE))
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/29291#comment:3>
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