UPDATE `供货商清单` SET `名称` = ?, `地址` = ?, `电话` = ?, `开户行` = ?, `银行帐号` = ? WHERE ((`供货商号` = ?) AND ((? = 1 AND `名称` IS NULL) OR (`名称` = ?)) AND ((? = 1 AND `地址` IS NULL) OR (`地址` = ?)) AND ((? = 1 AND `电话` IS NULL) OR (`电话` = ?)) AND ((? = 1 AND `开户行` IS NULL) OR (`开户行` = ?)) AND ((? = 1 AND `银行帐号` IS NULL) OR (`银行帐号` = ?)))