我有一个包含审计相关记录的表.有一列存储批准状态,其值为"N"和"Y".我必须找到最近从批准状态'Y'更改为'N'的记录.
样本数据:
Request_No approve_status request_create_date audit_no_in
22866 N 2016-06-21 11:47:12.7530000 1016
22866 N 2016-06-21 11:46:52.3660000 1015
22866 Y 2016-06-21 11:46:13.9290000 1014
22866 Y 2016-06-21 11:45:14.3200000 1013
22866 N 2016-06-21 11:37:27.9410000 1012
22866 Y 2016-06-21 11:37:03.4510000 1011
22866 N 2016-06-21 11:32:29.6310000 1010
22866 Y 2016-06-21 11:31:41.0270000 1009
22866 N 2016-06-20 19:17:30.4820000 1008
22866 N 2016-06-20 19:14:30.4720000 1007
22866 Y 2016-06-02 13:12:53.5170000 1006
所需输出:
Request_No approve_status request_create_date audit_no_in
22866 N 2016-06-21 11:46:52.3660000 1015
任何帮助将不胜感激.