आपको आरंभ करने के लिए यहां कुछ sql छद्म कोड दिया गया है:
select
penultimate.*
from data as penultimate
left join (
/* query on data to return last row frome each group */
) as ultimate
on /* sql to join 2nd last record on each group to last group */
where not ultimate.SerialNo is null