/**add FPURBILLNO*/
IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_PUR_THIRDCHECKORDER' AND KSQL_COL_NAME ='FPURBILLNO') 
 ALTER TABLE T_PUR_THIRDCHECKORDER  ADD (FPURBILLNO  NVARCHAR(80) DEFAULT ' ' NOT NULL );