订单表，代码只要 插入、查询、更新操作，，，但是 今天修改了 一个订单状态之后 一个订单不见了。（代码保证没有delete语句。。）
查看日志。。出现
For example:> "SELECT * FROM xy_order WHERE order_Number='14483TW5Z76S02945722' AND order_fk_customer_id='c1fc958e84f4445a8236d8a193faa7fa' LIMIT 0, 1 "
2015-11-24 17:34:56,156 [http-apr-80-exec-8] DEBUG org.nutz.dao.impl.sql.run.NutDaoExecutor - DELETE FROM xy_order WHERE order_id=?
| 1 |
|----------------------------------|
| 288e160069294d4e80bb1243ef9c6a0a |
For example:> "DELETE FROM xy_order WHERE order_id='288e160069294d4e80bb1243ef9c6a0a'"

删除操作。。。。什么情况？