IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_ER_INVOICEINFO' AND KSQL_COL_NAME ='FFLIGHTTRAINNUMS') 
 ALTER TABLE T_ER_INVOICEINFO ADD (FFLIGHTTRAINNUMS VARCHAR(30) DEFAULT ' ' NOT NULL );
IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_ER_PUBREIMINVOICEINFO' AND KSQL_COL_NAME ='FFLIGHTTRAINNUMS') 
 ALTER TABLE T_ER_PUBREIMINVOICEINFO ADD (FFLIGHTTRAINNUMS VARCHAR(30) DEFAULT ' ' NOT NULL );