我面临创建这样的查询的问题:
REF_CORP_ID | DEPARTMENT_NAME | IS_APPROVED | APPROVED_BY | APPROVED_DATETIME |APPROVAL_FROM | CREATED_BY
2 | Sales | 1 | 1 | 2013-07-05 18:19:31.917 | 2 | 1
| | 1 | 1 | 2013-07-05 18:19:31.917 | 2 | 1
| | 1 | 1 | 2013-07-05 18:19:31.917 | 2 | 1
1 | IT | 1 | 1 | 2013-07-05 18:05:21.170 | 2 | 1
| | 1 | 1 | 2013-07-05 18:05:21.170 | 2 | 1
| | 1 | 1 | 2013-07-05 18:05:21.170 | 2 | 1
3 | Testing | 0 | 1 | 2013-07-05 18:32:02.207 | 1 | 1
| | 0 | 1 | 2013-07-05 18:32:31.980 | 1 | 1
4 | HR | 1 | 1 | 2013-07-08 11:14:42.817 | 2 | 1
| | 1 | 1 | 2013-07-08 11:14:42.817 | 2 | 1