Last record of Join table

Question

I am lookign for the correct SQL code to join 2 tables and show only the last record of the details table.

I have a DB with 2 tables,

Deals 
   Deal         


        

Answer 1

Not very elegant, but works in Oracle :

select dealid,
       dealname,
       dealdetails,
       comment,
from
(
  select a.dealid,
         a.dealname,
         a.dealdetails,
         b.commenttime,
         b.comment,
         max(commenttime) over (partition by a.dealid) as maxCommentTime
  from deals a inner join dealcomments b on b.dealid = a.dealid
)
where comment = maxCommentTime