Query doubt

 
Hi,
 
RUNQRY     QRY(YINDTRD) QRYFILE((ZLIB/YTRDF1)) 
YPTDATE is one date field from YTRDF1 file, which is defined as 9 char,the 
value for today will be  020040816
======
if i call following I will get YDATE value...
DCL        VAR(&YDATE) TYPE(*CHAR) LEN(8) 
CALL       PGM(YRTVDATE) PARM('D' &YDATE '*YYMD' +  
                 'CW.HARR')   
YDATE value for today will be 20040816
====

Basically I need to implement the condition  YPTDATE < YDATE 
in query YINDTRD. Is this possible for me to write this condition in query or I 
have to totally replace the query with openquery?pls kindly answer, Thanks  so 
much in adv...
Murali