diff --git a/singer_sdk/connectors/sql.py b/singer_sdk/connectors/sql.py
index 3302a249f..00c83b884 100644
--- a/singer_sdk/connectors/sql.py
+++ b/singer_sdk/connectors/sql.py
@@ -1470,19 +1470,19 @@ def _get_type_sort_key(
         ) -> tuple[int, int]:
             # return rank, with higher numbers ranking first
 
-            _len = int(getattr(sql_type, "length", 0) or 0)
-
-            _pytype = t.cast("type", sql_type.python_type)
-            if issubclass(_pytype, (str, bytes)):
-                return 900, _len
-            if issubclass(_pytype, datetime):
-                return 600, _len
-            if issubclass(_pytype, float):
-                return 400, _len
-            if issubclass(_pytype, int):
-                return 300, _len
-
-            return 0, _len
+            len_ = int(getattr(sql_type, "length", 0) or 0)
+
+            pytype = t.cast("type", sql_type.python_type)
+            if issubclass(pytype, (str, bytes)):
+                return 900, len_
+            if issubclass(pytype, datetime):
+                return 600, len_
+            if issubclass(pytype, float):
+                return 400, len_
+            if issubclass(pytype, int):
+                return 300, len_
+
+            return 0, len_
 
         return sorted(sql_types, key=_get_type_sort_key, reverse=True)
 
diff --git a/tests/samples/conftest.py b/tests/samples/conftest.py
index d1bd024d3..719f2e20c 100644
--- a/tests/samples/conftest.py
+++ b/tests/samples/conftest.py
@@ -72,12 +72,12 @@ def sqlite_sample_db_catalog(sqlite_sample_db_config) -> Catalog:
 
 @pytest.fixture
 def sqlite_sample_tap(
-    _sqlite_sample_db,
+    sqlite_sample_db,
     sqlite_sample_db_config,
     sqlite_sample_db_state,
     sqlite_sample_db_catalog,
 ) -> SQLiteTap:
-    _ = _sqlite_sample_db
+    _ = sqlite_sample_db
     return SQLiteTap(
         config=sqlite_sample_db_config,
         catalog=sqlite_sample_db_catalog.to_dict(),