#31566: Subquery in annotation is included by its alias and is not present in
the
SELECT
-------------------------------------+-------------------------------------
Reporter: Gagaro | Owner: nobody
Type: Bug | Status: new
Component: Database | Version: 3.0
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 |
-------------------------------------+-------------------------------------
With the following queryset:
{{{
IndicatorValue.objects
.values("freight")
.annotate(
has_top_loading=Exists(OrderItemResult.objects.order_by().filter(order_line__order__freight=OuterRef("freight"),
loading_arm__loading_type=LoadingArm.LOADING_TYPE_TOP,).values('pk')),
start_time=Min("datetime")
)
.values('start_time')
}}}
I have the following error:
{{{
ProgrammingError: column "has_top_loading" does not exist
LINE 1: ...ROUP BY "indicators_indicatorvalue"."freight_id", "has_top_l...
}}}
The generated SQL is:
{{{
SELECT MIN("indicators_indicatorvalue"."datetime") AS "start_time"
FROM "indicators_indicatorvalue"
GROUP BY "indicators_indicatorvalue"."freight_id", "has_top_loading"
}}}
`has_top_loading` is only mentioned in the `GROUP_BY` and not in the
`SELECT`.
On Django 2.2, the same queryset generates the following SQL:
{{{
SELECT MIN("indicators_indicatorvalue"."datetime") AS "start_time"
FROM "indicators_indicatorvalue"
GROUP BY "indicators_indicatorvalue"."freight_id", (EXISTS(SELECT U0."id"
FROM "orders_orderitemresult" U0 INNER JOIN "loading_terminal_loadingarm"
U1 ON (U0."loading_arm_id" = U1."id") INNER JOIN "orders_orderitem" U2 ON
(U0."order_line_id" = U2."id") INNER JOIN "orders_order" U3 ON
(U2."order_id" = U3."id") WHERE (U1."loading_type" = TOP AND
U3."freight_id" = ("indicators_indicatorvalue"."freight_id"))))
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/31566>
Django <https://code.djangoproject.com/>
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