需要有关根据日期和状态订购某些项目/事件的最有效方法的想法。
当前我有以下查询。
select tevent.ID, tevent.ename, e_dates.edate, tevent.status, tevent.eactive from tevent
LEFT JOIN e_dates on tevent.ID=e_dates.EID) Where tevent.status <> 'delete' and tevent.eactive ='Y' group by tevent.id order
by (case when tevent.status = 'closed' and e_dates.edate >= curdate() then 0
else 1 end), edates.edate desc
我使用了一个案件,但它命令了状态,然后按日期排序,这使人们感到困惑。
下面是输出
+----+--------------+-----+-----------+
| ID |Edate | Ename | Status |
+----+--------------+-----+-----------+
| 2 | 2018-09-21 | Event2 | Closed |
| 5 | 2018-09-15 | Event5 | Closed |
| 3 | 2018-12-12 | Event3 | Open |
| 6 | 2018-10-25 | Event6 | Approved|
| 4 | 2018-10-25 | Event4 | Open |
| 7 | 2018-10-15 | Event7 | Pending |
| 10 | 2018-10-01 | Event10 | Open |
| 1 | 2018-09-30 | Event1 | Open |
| 4 | 2018-09-30 | Event4 | Open |
| 8 | 2018-09-01 | Event8 | Closed |
| 11 | 2018-08-25 | Event11 | Closed |
+----+--------------+-----+-----------+
已编辑: 我要完成的工作是列出已关闭的事件,在这些事件中,事件日期早于事件的日期保持在顶部。 IE(ID 2和ID 5)
但是希望ASC按时间顺序列出OPEN,APPROVED,PENDING的事件状态。
关闭事件,事件日期(日期)晚于底部列出的当前日期(now())
例如:
+----+--------------+-----+-----------+
| ID |Edate | Ename | Status |
+----+--------------+-----+-----------+
| 2 | 2018-09-21 | Event2 | Closed |
| 5 | 2018-09-15 | Event5 | Closed |
| 1 | 2018-09-30 | Event1 | Open |*
| 4 | 2018-09-30 | Event4 | Open |*
| 10 | 2018-10-01 | Event10 | Open |*
| 7 | 2018-10-15 | Event7 | Pending |*
| 4 | 2018-10-25 | Event4 | Open |*
| 6 | 2018-10-25 | Event6 | Approved|*
| 3 | 2018-12-12 | Event3 | Open |*
| 11 | 2018-08-25 | Event11 | Closed |
| 8 | 2018-09-01 | Event8 | Closed |
+----+--------------+-----+-----------+