How to compare files and create table of diff db2/sql

drop table mmason/yyckevents

CREATE TABLE MMASON/YYCKEVENTS like mmason/xxckevents        
Table YYCKEVENTS in MMASON created but could not be journaled.

(creates an empty table)
INSERT INTO MMASON/YYCKEVENTS SELECT * FROM mmason/mmckevents a    
WHERE not exists (SELECT 1 FROM mmason/xxckevents b WHERE a.EVEMPN 
= b.EVEMPN and a.EVSEQ = b. EVSEQ and a.EVTIME = b.evtime)         
1 rows inserted in YYCKEVENTS in MMASON.