Fixed #28915 -- Prevented SQLite from truncating trailing zeros in the fractional part of DecimalField.

This reverts commit a146b65628e702a9a3ed5be21542ca45366fbb29 and adds
a test for the regression.

1 files changed, 6 insertions, 0 deletions

diff --git a/tests/model_fields/test_decimalfield.py b/tests/model_fields/test_decimalfield.py
index c8851c5d94..893d529ed5 100644
--- a/tests/model_fields/test_decimalfield.py
+++ b/tests/model_fields/test_decimalfield.py
@@ -81,3 +81,9 @@ class DecimalFieldTests(TestCase):
         expected_message = validators.DecimalValidator.messages['max_whole_digits'] % {'max': 2}
         with self.assertRaisesMessage(ValidationError, expected_message):
             field.clean(Decimal('999'), None)
+
+    def test_roundtrip_with_trailing_zeros(self):
+        """Trailing zeros in the fractional part aren't truncated."""
+        obj = Foo.objects.create(a='bar', d=Decimal('8.320'))
+        obj.refresh_from_db()
+        self.assertEqual(obj.d.compare_total(Decimal('8.320')), Decimal('0'))