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Refs #18247 -- Fixed filtering on CombinedExpression(output_field=DecimalField()) annotation on SQLite.
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@ -10,6 +10,19 @@ from django.utils.deconstruct import deconstructible
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from django.utils.functional import cached_property
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from django.utils.functional import cached_property
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class SQLiteNumericMixin:
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"""
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Some expressions with output_field=DecimalField() must be cast to
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numeric to be properly filtered.
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"""
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def as_sqlite(self, compiler, connection, **extra_context):
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sql, params = self.as_sql(compiler, connection, **extra_context)
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with suppress(FieldError):
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if self.output_field.get_internal_type() == 'DecimalField':
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sql = 'CAST(%s AS NUMERIC)' % sql
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return sql, params
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class Combinable:
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class Combinable:
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"""
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"""
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Provide the ability to combine one or two objects with
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Provide the ability to combine one or two objects with
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@ -352,7 +365,7 @@ class Expression(BaseExpression, Combinable):
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pass
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pass
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class CombinedExpression(Expression):
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class CombinedExpression(SQLiteNumericMixin, Expression):
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def __init__(self, lhs, connector, rhs, output_field=None):
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def __init__(self, lhs, connector, rhs, output_field=None):
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super().__init__(output_field=output_field)
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super().__init__(output_field=output_field)
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@ -506,7 +519,7 @@ class OuterRef(F):
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return self
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return self
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class Func(Expression):
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class Func(SQLiteNumericMixin, Expression):
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"""An SQL function call."""
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"""An SQL function call."""
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function = None
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function = None
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template = '%(function)s(%(expressions)s)'
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template = '%(function)s(%(expressions)s)'
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@ -574,13 +587,6 @@ class Func(Expression):
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data['expressions'] = data['field'] = arg_joiner.join(sql_parts)
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data['expressions'] = data['field'] = arg_joiner.join(sql_parts)
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return template % data, params
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return template % data, params
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def as_sqlite(self, compiler, connection, **extra_context):
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sql, params = self.as_sql(compiler, connection, **extra_context)
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with suppress(FieldError):
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if self.output_field.get_internal_type() == 'DecimalField':
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sql = 'CAST(%s AS NUMERIC)' % sql
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return sql, params
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def copy(self):
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def copy(self):
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copy = super().copy()
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copy = super().copy()
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copy.source_expressions = self.source_expressions[:]
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copy.source_expressions = self.source_expressions[:]
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@ -244,6 +244,10 @@ class NonAggregateAnnotationTestCase(TestCase):
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sum_rating=Sum('rating')
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sum_rating=Sum('rating')
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).filter(sum_rating=F('nope')))
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).filter(sum_rating=F('nope')))
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def test_filter_decimal_annotation(self):
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qs = Book.objects.annotate(new_price=F('price') + 1).filter(new_price=Decimal(31)).values_list('new_price')
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self.assertEqual(qs.get(), (Decimal(31),))
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def test_combined_annotation_commutative(self):
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def test_combined_annotation_commutative(self):
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book1 = Book.objects.annotate(adjusted_rating=F('rating') + 2).get(pk=self.b1.pk)
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book1 = Book.objects.annotate(adjusted_rating=F('rating') + 2).get(pk=self.b1.pk)
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book2 = Book.objects.annotate(adjusted_rating=2 + F('rating')).get(pk=self.b1.pk)
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book2 = Book.objects.annotate(adjusted_rating=2 + F('rating')).get(pk=self.b1.pk)
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