reduce checking

main.py

@@ -59,6 +59,7 @@ class DBConn:
         # there might be a scenario that new cols might appear at a later stage, if so,
         # we shall accommodate by adding it to the database
         tbl_cols = self.table_mapping[tbl]
+        if len(tbl_cols) < len(col_names):
             not_found = []
             for col in col_names:
                 if col not in tbl_cols: