Update app.py

app.py

@@ -290,6 +290,7 @@ def change_insert_mode(choice):
             """
     table_status = table_check()
     if choice == "Upload New" and not "NoSuchTableError" in table_status:
+        sql_engine(f"DROP COLUMN *;")
         sql_engine(f"DROP TABLE {PATHS.TABLE_NAME};")
     else:
         pass