>I have these tables:
>
>EMPMAST
>
>IDNO SURNAME
>0001   Reyes
>0002   Roberts
>0003   Argent
>0004   Wesley
>
>ACTION
>
>IDNO EFFDATE    DESC
>0001   01/01/1996 Hire
>0001   01/01/1997 Promote
>0001   01/01/1998 Increase Wage
>0001   01/01/1999 Transfer
>0002   01/01/1997 Hire
>0002   01/01/1999 Promote
>
>What I want to display is:
>
>IDNO SURNAME EFFDATE   DESC
>0001   Reyes           01/01/1999 Transfer
>0002   Roberts        01/01/1999 Promote

Try this:
SELECT Action.Idno, EmpMast.Surname, Last(Action.Desc) AS DernierDeDesc, Max(Action.EffDate) AS MaxDeEffDate
FROM EmpMast INNER JOIN Action ON EmpMast.IDNO = Action.Idno
GROUP BY Action.Idno, EmpMast.Surname;