#27241: Annotate doesn't work with PostgreSQL views anymore
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Reporter: jaap3 | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.10
(models, ORM) | Keywords: postgresql view
Severity: Normal | aggregate annotate
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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Using annotate on (unmanaged) models backed by views has stopped working
and now throws a:
`psycopg2.ProgrammingError: column "..." must appear in the GROUP BY
clause or be used in an aggregate function...`
This is caused by the fix to ticket #19259.
Queries with an aggregation now only list the PK field in the `GROUP BY`
clause, but this doesn't work for views because they cannot have primary
keys in PostgreSQL.
Now Django doesn't officially support views, or models without a primary
key, but it did work before so it's somewhat of a regression.
I ran into this problem because I'm working on a legacy database and have
models that are backed by a view using the `db_table` Meta option.
--
Ticket URL: <https://code.djangoproject.com/ticket/27241>
Django <https://code.djangoproject.com/>
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