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

Obligatory no-subquery-nowhere-answer:

select d.*
       , dc.*
from   Deals d
       left outer join DealComments dc 
       on d.DealID = dc.DealID
       left outer join DealComments dc1 
       on d.DealID = dc1.DealID 
   and 
       dc1.CommentTime > dc.CommentTime
where  dc1.CommentTime is null

Show me everything in Deals and DealComments when there exists no CommentTime greater than any given comment time for a particular DealID.

Edit: as Alex Kuznetsov astutely points out in a comment: the OP requested that all deals be displayed -- whether a deal has a comment or not. So I have changed the first JOIN from INNER to LEFT OUTER.