IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_MDS_ORDERPOOLRES' AND KSQL_COL_NAME ='FSALBILLSEQ') 
 ALTER TABLE T_MDS_ORDERPOOLRES ADD (FSALBILLSEQ VARCHAR(255) DEFAULT ' ' NOT NULL );
 
