COLUMN name FORMAT A40
COLUMN highwater FORMAT 99999999999999
COLUMN last_value FORMAT 99999999999999
SELECT h.name,
h.highwater,
h.last_value
FROM dba_high_water_mark_statistics h
WHERE h.version = (SELECT MAX(h2.version)
FROM dba_high_water_mark_statistics h2
WHERE h2.name = h.name);