Fix None column comment (#1018)

kukushking · web-flow · commit bae604e3b0ff · 2021-11-18T12:33:39.000Z
diff --git a/awswrangler/catalog/_add.py b/awswrangler/catalog/_add.py
@@ -288,7 +288,7 @@ def add_column(
     table: str,
     column_name: str,
     column_type: str = "string",
-    column_comment: Optional[str] = None,
+    column_comment: Optional[str] = "",
     boto3_session: Optional[boto3.Session] = None,
     catalog_id: Optional[str] = None,
 ) -> None:
