Fix operation tests

mssql/base.py

@@ -581,7 +581,7 @@ def format_sql(self, sql, params):
             sql = smart_str(sql, self.driver_charset)
 
         # pyodbc uses '?' instead of '%s' as parameter placeholder.
-        if params is not None:
+        if params is not None and params != []:
             sql = sql % tuple('?' * len(params))
 
         return sql

mssql/features.py

@@ -13,7 +13,7 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     can_introspect_small_integer_field = True
     can_return_columns_from_insert = True
     can_return_id_from_insert = True
-    can_return_rows_from_bulk_insert = False
+    can_return_rows_from_bulk_insert = True
     can_rollback_ddl = True
     can_use_chunked_reads = False
     for_update_after_from = True

mssql/introspection.py

@@ -138,6 +138,17 @@ def get_table_description(self, cursor, table_name, identity_check=True):
                     column[1] = SQL_AUTOFIELD
             if column[1] == Database.SQL_WVARCHAR and column[3] < 4000:
                 column[1] = Database.SQL_WCHAR
+            # Remove surrounding parentheses for default values
+            if column[7]:
+                default_value = column[7]
+                start = 0
+                end = -1
+                for _ in range(2):
+                    if default_value[start] == '(' and default_value[end] == ')':
+                        start += 1
+                        end -= 1
+                column[7] = default_value[start:end + 1]
+
             items.append(FieldInfo(*column))
         return items
 

testapp/settings.py

@@ -301,8 +301,9 @@
     'queries.test_qs_combinators.QuerySetSetOperationTests.test_union_with_select_related_and_order',
     'expressions_window.tests.WindowFunctionTests.test_limited_filter',
     'schema.tests.SchemaTests.test_remove_ignored_unique_constraint_not_create_fk_index',
+    'constraints.tests.UniqueConstraintTests.test_validate_nullable_textfield_with_isnull_true',
 
-    #Django 5.0
+    # Django 5.0
     'constraints.tests.CheckConstraintTests.test_validate_custom_error',
     'constraints.tests.CheckConstraintTests.test_validate_nullable_jsonfield',
     'constraints.tests.CheckConstraintTests.test_validate_pk_field',