IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_PUR_SCDATAHANDLELOG' AND KSQL_COL_NAME ='FLOGDIM') 
 ALTER TABLE T_PUR_SCDATAHANDLELOG ADD (FLOGDIM VARCHAR(80) DEFAULT 'logrecord' NOT NULL);