Question

我有一张病人，他们的服务，服务日期等表...如果病人在一个月内有6项以上的独特服务，那么在我的选择陈述中我想要一个新专栏来说明＃34; Full Month＆＃34;在它。

Answer 1

你需要一个简单的小组

设置数据

create table #patient
(
  patientId int,
  serviceId int,
  dt date
)

insert into #patient values
(1, 1, '2016-01-02'),
(1, 1, '2016-01-05'),
(1, 1, '2016-01-07'),
(1, 1, '2016-01-12'),
(1, 1, '2016-01-16'),
(1, 1, '2016-01-20'),
(1, 1, '2016-01-25'),
(1, 2, '2016-01-02'),
(1, 2, '2016-01-02'),
(2, 1, '2016-01-02'),
(2, 1, '2016-01-02')

获取结果

select patientId, serviceId, count(*) AS Cnt
, case 
    when count(*) >= 6 then 'Full Month'
    else 'Not Full Month'
  end AS YourNewColumn
from #patient
group by patientId, serviceId, month(dt)

会显示

+-----------+-----------+-----+----------------+
| patientId | serviceId | Cnt | YourNewColumn  |
+-----------+-----------+-----+----------------+
|         1 |         1 |   7 | Full Month     |
|         1 |         2 |   2 | Not Full Month |
|         2 |         1 |   2 | Not Full Month |
+-----------+-----------+-----+----------------+

Answer 2

我想您可以对您的特定患者标识符使用GROUP BY查询，以获取特定患者在一个日期范围内的所有结果，如下所示：

  SELECT PatientId,
         CASE WHEN COUNT(ServiceId) > 5 THEN 1 ELSE 0 END AS FullMonth
    FROM Patients 
   WHERE ServiceDate BETWEEN @Start AND @End
GROUP BY PatientId, ServiceId

你可以see an overly simplified example of this here。

当列中有6个或更多唯一出现时计数，然后在新列中有一个标识它的字符串

2 个答案: