Can you please help with this select statement.

Question

The following code has a result, I need to modify the select somehow which only gives me the rows which are common between all PLSTS.
Any suggestions?
Thank you
SELECT DISTINCT P.PLST, P.MENU, I,PNL, P.ACCESS
FROM AUTHITEM P, I.MENUITEM
WHERE P.MENU = I.MENU
AND P.PNL = I.PNL
AND P.MENU IN ('MSN, CPP')
AND P.ACESS >= 8
GROUP BY P.PLST, PMENU, I.PNL, P.ACCESS
HAVING COUNT (*) >=2
ORDER BY 2,3,4,1
This is the result with having count > = 1, and if I add having count > =1 I get the following result
PLST     MENU     PNL     ACCESS
C001     MSN     LNAME     14
C002     MSN     LNAME     14
B008     MSN     LNAME     14
B005     MSN     FNAME     14
M009     MSN     LNAME     14
C001     MSN     GNAME     14
C002     MSN     GNAME     14
B008     MSN     LNAME     14
C001     MSN     FNAME     14
C002     MSN     FNAME     14
k008     CPP     MNAME     14
I need this result
PLST     MENU     PNL     ACCESS
C001     MSN     LNAME     14
C002     MSN     LNAME     14
C001     MSN     GNAME     14
C002     MSN     GNAME     14
C001     MSN     FNAME     14
C002     MSN     FNAME     14

Answer 1

why bother with DISTINCT ?
have a look at the results of :
SELECT P.PLST, P.MENU, I.PNL, P.ACCESS , COUNT(*) ZCOUNT
  FROM AUTHITEM P, I.MENUITEM
WHERE P.MENU    = I.MENU
   AND P.PNL     = I.PNL
   AND P.MENU  IN ('MSN, CPP')
   AND P.ACCESS >= 8
GROUP BY P.PLST, P.PMENU, I.PNL, P.ACCESS
ORDER BY 2,3,4,1
;and then apply HAVING COUNT(*) >= ...