as400 - update query problem

[tgomes]

The code below works in a SQL server environment, when I try to use the same in AS400 STrSQL I get a error message that I can not use Inner on a Update query.

UPDATE PWPTFILES/UPRM A INNER JOIN TGOMES/THUCSRMT B ON A.UPPRM =
B.UCPRM) INNER JOIN TGOMES/WRATELISTT C ON (C.UCSCOLD = B.UCSCH)
AND (B.UCSIZ = C.UCSIZ) AND (A.UPTYP = C.UPTYP)

SET B.UCSCH = C.UCSCHNEW
WHERE ((B.UCTYP='W') AND (B.UCACT=0) AND (B.UCCLD=0) AND

(A.UPRTE Not IN ( 0,1000,4000) AND C.UPTYP ='COM ')

How can I rewrite this into sql 400 and work!

[hol.sten]

How is this question related to OOo Base?