Refs #28459 -- Improved performance of loading DecimalField on SQLite.
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@ -5,9 +5,9 @@ from contextlib import suppress
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from django.conf import settings
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from django.core.exceptions import FieldError
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from django.db import utils
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from django.db.backends import utils as backend_utils
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from django.db.backends.base.operations import BaseDatabaseOperations
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from django.db.models import aggregates, fields
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from django.db.models.expressions import Col
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from django.utils import timezone
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from django.utils.dateparse import parse_date, parse_datetime, parse_time
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from django.utils.duration import duration_string
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@ -206,7 +206,9 @@ class DatabaseOperations(BaseDatabaseOperations):
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converters.append(self.convert_datefield_value)
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elif internal_type == 'TimeField':
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converters.append(self.convert_timefield_value)
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elif internal_type == 'DecimalField':
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# Converter for Col is added with Database.register_converter()
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# in base.py.
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elif internal_type == 'DecimalField' and not isinstance(expression, Col):
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converters.append(self.convert_decimalfield_value)
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elif internal_type == 'UUIDField':
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converters.append(self.convert_uuidfield_value)
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@ -237,7 +239,8 @@ class DatabaseOperations(BaseDatabaseOperations):
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def convert_decimalfield_value(self, value, expression, connection):
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if value is not None:
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value = expression.output_field.format_number(value)
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value = backend_utils.typecast_decimal(value)
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# Value is not converted to Decimal here as it will be converted
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# later in BaseExpression.convert_value().
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return value
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def convert_uuidfield_value(self, value, expression, connection):
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