Question

我有一个查询，要求提供者在某些时间段内从我们的医疗记录系统中查看患者的数量。我想在过去的一年中每个月，包括当前的月份。

我可以手动执行此操作，但我希望每个月自动调整以便当前月份是最后一个查询而其他月份是前11个月，而无需重做代码中的所有搜索

理想情况下，我还希望将其输出到我的表格中，并使用适当的标题输出。例如，当输出表时，本月将列为9/15而不是Month12，下个月将调整为10/15。

有关如何完成这两项任务的任何建议？

这是我目前的代码，它完美无缺，但必须每月手动调整：

BEGIN
INSERT INTO #Output (Provider, Date1, Date2, Date3, Date4, Date5, Date6, Date7, Date8, Date9, Date10, Date11, Date12)
OUTPUT inserted.Provider, inserted.Date1, inserted.Date2, inserted.Date3, inserted.Date4, inserted.Date5, inserted.Date6, inserted.Date7, inserted.Date8,
inserted.Date9, inserted.Date10,inserted.Date11, inserted.Date12
select pm.last_name,
  SUM(case when enc_timestamp >= '20141001' and enc_timestamp  < '20141101' then 1 else 0 end) as total_patients_Oct14,
  SUM(case when enc_timestamp >= '20141101' and enc_timestamp  < '20141201' then 1 else 0 end) as total_patients_Nov14,
  SUM(case when enc_timestamp >= '20141201' and enc_timestamp  < '20150101' then 1 else 0 end) as total_patients_Dec14,
  SUM(case when enc_timestamp >= '20150101' and enc_timestamp  < '20150201' then 1 else 0 end) as total_patients_Jan15,
  SUM(case when enc_timestamp >= '20150201' and enc_timestamp  < '20150301' then 1 else 0 end) as total_patients_Feb15,
  SUM(case when enc_timestamp >= '20150301' and enc_timestamp  < '20150401' then 1 else 0 end) as total_patients_Mar15,
  SUM(case when enc_timestamp >= '20150401' and enc_timestamp  < '20150501' then 1 else 0 end) as total_patients_April15,
  SUM(case when enc_timestamp >= '20150501' and enc_timestamp  < '20150601' then 1 else 0 end) as total_patients_May15,
  SUM(case when enc_timestamp >= '20150601' and enc_timestamp  < '20150701' then 1 else 0 end) as total_patients_June15,
  SUM(case when enc_timestamp >= '20150701' and enc_timestamp  < '20150801' then 1 else 0 end) as total_patients_July15,
  SUM(case when enc_timestamp >= '20150801' and enc_timestamp  < '20150901' then 1 else 0 end) as total_patients_Aug15,
  SUM(case when enc_timestamp >= '20150901' and enc_timestamp  < '20151001' then 1 else 0 end) as Total_Charge_Sep15
from patient_encounter pe
inner join provider_mstr pm ON pe.rendering_provider_id = pm.provider_id
where enc_timestamp >= '20140101' and enc_timestamp  < '20160101' and billable_ind = 'Y' and checkin_datetime is not NULL
group by pm.last_name
END

Answer 1

方法DATEADD是你的朋友：

编辑：自动获取当前月份的第一天作为ReferenceDate： EDIT2：将参考日期设置为一年。

DECLARE @ReferenceDate DATETIME=CAST(YEAR(GETDATE())-1 AS VARCHAR(4))+REPLACE(STR(MONTH(GETDATE()),2),' ','0')+'01';

这是你改编的代码：

BEGIN
INSERT INTO #Output (Provider, Date1, Date2, Date3, Date4, Date5, Date6, Date7, Date8, Date9, Date10, Date11, Date12)
OUTPUT inserted.Provider, inserted.Date1, inserted.Date2, inserted.Date3, inserted.Date4, inserted.Date5, inserted.Date6, inserted.Date7, inserted.Date8,
inserted.Date9, inserted.Date10,inserted.Date11, inserted.Date12
select pm.last_name,
  SUM(case when enc_timestamp >= @ReferenceDate and enc_timestamp  < DATEADD(MONTH,1,@ReferenceDate) then 1 else 0 end) as total_patients_Oct14,
  SUM(case when enc_timestamp >= DATEADD(MONTH,1,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,2,@ReferenceDate) then 1 else 0 end) as total_patients_Nov14,
  SUM(case when enc_timestamp >= DATEADD(MONTH,2,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,3,@ReferenceDate) then 1 else 0 end) as total_patients_Dec14,
  SUM(case when enc_timestamp >= DATEADD(MONTH,3,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,4,@ReferenceDate) then 1 else 0 end) as total_patients_Jan15,
  SUM(case when enc_timestamp >= DATEADD(MONTH,4,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,5,@ReferenceDate) then 1 else 0 end) as total_patients_Feb15,
  SUM(case when enc_timestamp >= DATEADD(MONTH,5,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,6,@ReferenceDate) then 1 else 0 end) as total_patients_Mar15,
  SUM(case when enc_timestamp >= DATEADD(MONTH,6,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,7,@ReferenceDate) then 1 else 0 end) as total_patients_April15,
  SUM(case when enc_timestamp >= DATEADD(MONTH,7,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,8,@ReferenceDate) then 1 else 0 end) as total_patients_May15,
  SUM(case when enc_timestamp >= DATEADD(MONTH,8,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,9,@ReferenceDate) then 1 else 0 end) as total_patients_June15,
  SUM(case when enc_timestamp >= DATEADD(MONTH,9,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,10,@ReferenceDate) then 1 else 0 end) as total_patients_July15,
  SUM(case when enc_timestamp >= DATEADD(MONTH,10,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,11,@ReferenceDate) then 1 else 0 end) as total_patients_Aug15,
  SUM(case when enc_timestamp >= DATEADD(MONTH,11,@ReferenceDate) and enc_timestamp  < DATEADD(MONTH,12,@ReferenceDate) then 1 else 0 end) as Total_Charge_Sep15
from patient_encounter pe
inner join provider_mstr pm ON pe.rendering_provider_id = pm.provider_id
where enc_timestamp >= @ReferenceDate and enc_timestamp  < DATEADD(YEAR,2,@ReferenceDate) and billable_ind = 'Y' and checkin_datetime is not NULL
group by pm.last_name
END

SQL Server：根据当前日期调整查询日期范围，并调整列标题

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