hive sql find the latest record

Question

the table is:

create table test (
id string,
name string,
age string,
modified string)

data like this:

id    name   age  modife         


        

Answer 1

Give this a try:

select t1.* from test t1
join (
  select id, max(modifed) maxModified from test
  group by id
) s
on t1.id = s.id and t1.modifed = s.maxModified

Fiddle here.

Left outer join solution here.

Let us know which one runs faster :)