#29139: Aggregate functions failing when using Postgres JSON field KeyTransform -------------------------------------+------------------------------------- Reporter: trik | Owner: (none) Type: Bug | Status: new Component: | Version: 2.0 contrib.postgres | Keywords: json keytransform Severity: Normal | unhashable Triage Stage: | Has patch: 0 Unreviewed | Needs documentation: 0 | Needs tests: 0 Patch needs improvement: 0 | Easy pickings: 0 UI/UX: 0 | -------------------------------------+------------------------------------- When annotating by a nested KeyTransform applied to a JSON field, aggregate functions fail:
{{{#!python JSONModel.objects.annotate(history=KeyTransform('-1', 'field'))\ .annotate(last_state=KeyTransform('state', 'history'))\ .filter(last_state__gte=5).count() JSONModel.objects.annotate(history=KeyTransform('-1', 'field'))\ .annotate(last_state=KeyTransform('state', 'history'))\ .filter(last_state__isnull=False).aggregate(Sum('last_state')) }}} {{{ Traceback (most recent call last): File "/Users/trik/Projects/3d_party/django/tests/postgres_tests/test_json.py", line 305, in test_keytransform .filter(last_state__gte=5).count(), File "/Users/trik/Projects/3d_party/django/django/db/models/query.py", line 384, in count return self.query.get_count(using=self.db) File "/Users/trik/Projects/3d_party/django/django/db/models/sql/query.py", line 494, in get_count number = obj.get_aggregation(using, ['__count'])['__count'] File "/Users/trik/Projects/3d_party/django/django/db/models/sql/query.py", line 462, in get_aggregation outer_query.add_subquery(inner_query, using) File "/Users/trik/Projects/3d_party/django/django/db/models/sql/subqueries.py", line 193, in add_subquery self.subquery, self.sub_params = query.get_compiler(using).as_sql(with_col_aliases=True) File "/Users/trik/Projects/3d_party/django/django/db/models/sql/compiler.py", line 443, in as_sql extra_select, order_by, group_by = self.pre_sql_setup() File "/Users/trik/Projects/3d_party/django/django/db/models/sql/compiler.py", line 55, in pre_sql_setup group_by = self.get_group_by(self.select + extra_select, order_by) File "/Users/trik/Projects/3d_party/django/django/db/models/sql/compiler.py", line 130, in get_group_by if (sql, tuple(params)) not in seen: TypeError: unhashable type: 'list' }}} [[https://github.com/gnucoop/django/commit/34769e05be720792e8afc2aebdac0230a77e04c0|Failing test case]] -- Ticket URL: <https://code.djangoproject.com/ticket/29139> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/047.2d98542573e0eee81d7c31f69d3b8384%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.