-- 租赁合同.付款规则增加税额字段
IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_FA_LEASE_PAY_RULE' AND KSQL_COL_NAME ='FTAX')
 ALTER TABLE T_FA_LEASE_PAY_RULE ADD (FTAX DECIMAL(19,4) DEFAULT 0 NOT NULL );