IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_SRC_SUPSCHEME' AND KSQL_COL_NAME ='FORGFIELDID') 
 ALTER TABLE T_SRC_SUPSCHEME ADD (FORGFIELDID VARCHAR(30) DEFAULT ' ' NOT NULL );
IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_SRC_SUPSCHEME' AND KSQL_COL_NAME ='FORGFIELDNAME') 
 ALTER TABLE T_SRC_SUPSCHEME ADD (FORGFIELDNAME NVARCHAR(50) DEFAULT ' ' NOT NULL );
