#32963: Bug: combination of filter on the annotation and random order.
-------------------------------------+-------------------------------------
Reporter: | Owner: nobody
likecodeingloveproblems |
Type: Bug | Status: new
Component: Database layer | Version: 3.1
(models, ORM) |
Severity: Normal | Resolution:
Keywords: Random + Group By | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Description changed by likecodeingloveproblems:
Old description:
> I have a query like:
> In [6]: Shop.objects\
> ...: .annotate(product_count = Count('ShopProduct'))\
> ...: .filter(product_count__gt=1)\
> ...: .order_by('?')
> Out[6]: <QuerySet []>
>
> but the out put is empty!
> if i remove order_by('?') it works, and the same for the
> filter(product_count__gt=1).
> I get the SQL from connection.queries:
>
> SELECT ..., COUNT("nakhll_market_product"."ID") AS "product_count" FROM
> "nakhll_market_shop" LEFT OUTER JOIN "nakhll_market_product" ON
> ("nakhll_market_shop"."ID" = "nakhll_market_product"."FK_Shop_id") GROUP
> BY "nakhll_market_shop"."ID", RANDOM() HAVING
> COUNT("nakhll_market_product"."ID") > 1 ORDER BY RANDOM() ASC
>
> but this SQL works correctly:
>
> SELECT
> ... ,
> COUNT("nakhll_market_product"."ID") AS "product_count"
> FROM "nakhll_market_shop"
> LEFT OUTER JOIN
> "nakhll_market_product" ON ("nakhll_market_shop"."ID" =
> "nakhll_market_product"."FK_Shop_id")
> WHERE ("nakhll_market_shop"."Available" AND
> "nakhll_market_shop"."Publish")
> GROUP BY "nakhll_market_shop"."ID" HAVING
> COUNT("nakhll_market_product"."ID") > 1
> ORDER BY RANDOM()
New description:
I have a query like:
In [6]: Shop.objects\
...: .annotate(product_count = Count('ShopProduct'))\
...: .filter(product_count__gt=1)\
...: .order_by('?')
Out[6]: <QuerySet []>
but the out put is empty!
if i remove order_by('?') it works, and the same for the
filter(product_count__gt=1).
I get the SQL from connection.queries:
SELECT ..., COUNT("nakhll_market_product"."ID") AS "product_count" FROM
"nakhll_market_shop" LEFT OUTER JOIN "nakhll_market_product" ON
("nakhll_market_shop"."ID" = "nakhll_market_product"."FK_Shop_id") GROUP
BY "nakhll_market_shop"."ID", RANDOM() HAVING
COUNT("nakhll_market_product"."ID") > 1 ORDER BY RANDOM() ASC
but this SQL works correctly:
SELECT
... ,
COUNT("nakhll_market_product"."ID") AS "product_count"
FROM "nakhll_market_shop"
LEFT OUTER JOIN
"nakhll_market_product" ON ("nakhll_market_shop"."ID" =
"nakhll_market_product"."FK_Shop_id")
WHERE ("nakhll_market_shop"."Available" AND
"nakhll_market_shop"."Publish")
GROUP BY "nakhll_market_shop"."ID" HAVING
COUNT("nakhll_market_product"."ID") > 1
ORDER BY RANDOM()
--
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Ticket URL: <https://code.djangoproject.com/ticket/32963#comment:1>
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