SQL 多个值的百分比

Question

我迷路了我有 4 列：

Market、Count、Disnerollment、Enrollment

我需要获得 disenrollment 和 enrollment 之间的百分比，但是它们基于我制作了两个单独的案例陈述的列 MBRstatus 以便将其分开。

我不知道如何从这样设置的查询中计算百分比，但我也不知道如何让列以另一种方式分开任何帮助将不胜感激

我已经包含查询

use medicare_enrollment
---Variable set to find the first of the current reporting year
Declare @1stofYear as Date
set @1stofYear = DATEADD(YEAR, DATEDIFF(YEAR, 0, GETDATE()), 0)


---Variable set to find the end of most recent quarter
Declare @endofqrtr as date
set @endofqrtr = convert(varchar,DATEADD(MONTH,DATEDIFF(MONTH,0,getdate()),-1),101)


 SELECT     MARKET
         , COUNT(MARKET) AS COUNT ,Disenrollment,Enrollment     
from (SELECT DISTINCT 
                      MBR_FIRST_NAME, MBR_LAST_NAME, MBR_DOB, MBR_MEDICARE_ID, MBR_COV_EFF_DATE, MBR_COV_END_DATE, MBR_ADMIN_DIV_CD AS MARKET, 
                      CI_GRP_ID, MBR_STATUS_CD, COUNT(MBR_STATUS_CD) AS count, 
                      CASE WHEN MBR_STATUS_CD = 'I' THEN 'Disenrollment' End as Disenrollment, Case WHEN MBR_STATUS_CD = 'A' THEN 'Enrollment' END AS Enrollment
FROM         VW_CI_Snapshot_Today AS c
WHERE     (NOT (PROD_TYPE_CODE = 'MCD')) AND (MBR_STATUS_CD IN ('I', 'A')) AND (MBR_ADMIN_DIV_CD IN ('CT', 'IA', 'IL', 'MA', 'ME', 'MI', 'MN', 'MT', 'ND', 'NE', 'NH', 'NJ', 
                      'NY', 'RI', 'SD', 'VT', 'WI', 'WY')) AND (MBR_COV_END_DATE BETWEEN @1stofYear AND @endofqrtr) OR
                      (NOT (PROD_TYPE_CODE = 'MCD')) AND (MBR_STATUS_CD IN ('I', 'A')) AND (MBR_ADMIN_DIV_CD IN ('CT', 'IA', 'IL', 'MA', 'ME', 'MI', 'MN', 'MT', 'ND', 'NE', 'NH', 'NJ', 
                      'NY', 'RI', 'SD', 'VT', 'WI', 'WY')) AND (ISNULL(MBR_COV_END_DATE, '12/31/9999') = '12/31/9999')
GROUP BY MBR_STATUS_CD, MBR_ADMIN_DIV_CD,MBR_LAST_NAME, MBR_FIRST_NAME, MBR_DOB, MBR_MEDICARE_ID, MBR_COV_EFF_DATE, MBR_COV_END_DATE, CI_GRP_ID, MBR_ADMIN_DIV_CD) as tblCount
Group by MARKET,Enrollment,Disenrollment,count
order by MARKET

Answer 1

我对您的查询做了一些修改。注意如果你使用 group by，你不需要使用 distinct。

SELECT MARKET , COUNT(MARKET) AS MCOUNT ,Sum(Disenrollment) as Disenrollment, Sum(Enrollment) as Enrollment, Case when Sum(MBRcount) <> 0 then Sum(Disenrollment)/Sum(MBRcount) else 0 end as Disenroll, 
Case when Sum(MBRcount) <> 0 then Sum(Enrollment)/Sum(MBRcount) else 0 end as Enroll
from (SELECT MBR_FIRST_NAME, MBR_LAST_NAME, MBR_DOB, MBR_MEDICARE_ID, MBR_COV_EFF_DATE, MBR_COV_END_DATE, MBR_ADMIN_DIV_CD AS MARKET, 
CI_GRP_ID, MBR_STATUS_CD, COUNT(MBR_STATUS_CD) AS MBRcount, 
CASE WHEN MBR_STATUS_CD = 'I' THEN 1 else  0 End as Disenrollment, Case WHEN MBR_STATUS_CD = 'A' THEN 1 else 0 END AS Enrollment 
FROM VW_CI_Snapshot_Today AS c 
WHERE (NOT (PROD_TYPE_CODE = 'MCD')) AND (MBR_STATUS_CD IN ('I', 'A')) AND (MBR_ADMIN_DIV_CD IN ('CT', 'IA', 'IL', 'MA', 'ME', 'MI', 'MN', 'MT', 'ND', 'NE', 'NH', 'NJ', 'NY', 'RI', 'SD', 'VT', 'WI', 'WY')) 
AND (MBR_COV_END_DATE BETWEEN @1stofYear AND @endofqrtr) OR (NOT (PROD_TYPE_CODE = 'MCD')) AND (MBR_STATUS_CD IN ('I', 'A')) 
AND (MBR_ADMIN_DIV_CD IN ('CT', 'IA', 'IL', 'MA', 'ME', 'MI', 'MN', 'MT', 'ND', 'NE', 'NH', 'NJ', 'NY', 'RI', 'SD', 'VT', 'WI', 'WY')) 
AND (ISNULL(MBR_COV_END_DATE, '12/31/9999') = '12/31/9999') 
GROUP BY MBR_STATUS_CD, MBR_ADMIN_DIV_CD,MBR_LAST_NAME, MBR_FIRST_NAME, MBR_DOB, MBR_MEDICARE_ID, MBR_COV_EFF_DATE, MBR_COV_END_DATE, CI_GRP_ID, MBR_ADMIN_DIV_CD) as tblCount 
Group by MARKET
order by MARKET

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