#31097: StringAgg And ArrayAgg with filtering in subquery generates invalid
string_agg() SQL function call
----------------------------------+------------------------------------
Reporter: Laurent Tramoy | Owner: (none)
Type: Bug | Status: new
Component: contrib.postgres | Version: 3.0
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
----------------------------------+------------------------------------
Changes (by Baptiste Mispelon):
* version: 2.2 => 3.0
* stage: Unreviewed => Accepted
Comment:
Reproduced on current master (ff00a053478fee06bdfb4206c6d4e079e98640ff)
using the code in the ticket.
Here's the prettified query reported by `--debug-sql` after the testcase
failure:
{{{#!sql lineno=1 marks=20
SELECT
"aaaaaaticket31097_book"."id",
"aaaaaaticket31097_book"."category"
FROM
"aaaaaaticket31097_book"
WHERE
"aaaaaaticket31097_book"."id" IN (
SELECT
U0."id"
FROM
"aaaaaaticket31097_book" U0
LEFT OUTER JOIN "aaaaaaticket31097_book_people" U1 ON (U0."id" =
U1."book_id")
LEFT OUTER JOIN "aaaaaaticket31097_person" U2 ON (U1."person_id" =
U2."id")
WHERE
U0."id" = "aaaaaaticket31097_book"."id"
GROUP BY
U0."id"
HAVING
NOT (
STRING_AGG(, ',') FILTER (
WHERE
U2."first_name"
) = ''
)
)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/31097#comment:2>
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