You could something like
SELECT your_columns, 'uploader success' AS stage, "column_uploader success" AS value FROM table_name
UNION ALL
SELECT your_columns, 'Post mission cuccess/fail' AS stage, "column_Post mission cuccess/fail" AS value FROM table_name
UNION ALL
SELECT your_columns, 'source_map_id' AS stage, "column_source_map_id" AS value FROM table_name
...;