Question

我已经生成了以下查询，并且我想通过我在查询中创建的新IMS_CUST_ID_GRP（将其汇总到此处，删除CUST_ID）来计算患者计数。如何修改我的查询以返回我想要的结果？我尝试使用分析函数，但是我收到了错误。

SELECT (CASE WHEN SUM(NEW_PAT_CNT)   = 1 THEN '1'
WHEN SUM(NEW_PAT_CNT)  >=2 AND SUM(NEW_PAT_CNT) <=12 THEN '2-12'
WHEN SUM(NEW_PAT_CNT) >=13 AND SUM(NEW_PAT_CNT)<=24 THEN '13-24'
WHEN SUM(NEW_PAT_CNT) >=24 AND SUM(NEW_PAT_CNT) <=48 THEN '25-48'
WHEN SUM(NEW_PAT_CNT)  >48 THEN '>48'
END) IMS_CUST_ID_GRP,  SUM(NEW_PAT_CNT), CUST_ID
FROM DEXODS.OPUB_ONE_IMS_IDS_FACT fct,
DEXWHS.D_DATE dt,
DEXWHS.D_ACCOUNT_VEEVA ac
WHERE fct.DATE_DIM_KEY = dt.DATE_ID
AND   fct.ACCOUNT_DIM_KEY = ac.ACCOUNT_DIM_KEY
AND   NEW_PAT_CNT >0
AND   dt.year in n'2016'
GROUP BY CUST_ID

返回错误的分析函数

SELECT (CASE WHEN SUM(NEW_PAT_CNT) OVER (PARTITION BY CUST_ID)   = 1 THEN '1'
WHEN SUM(NEW_PAT_CNT) OVER (PARTITION BY CUST_ID)  >=2 AND        SUM(NEW_PAT_CNT)OVER (PARTITION BY CUST_ID)  <=12 THEN '2-12'
WHEN SUM(NEW_PAT_CNT) OVER (PARTITION BY CUST_ID) >=13 AND SUM(NEW_PAT_CNT)OVER (PARTITION BY CUST_ID) <=24 THEN '13-24'
WHEN SUM(NEW_PAT_CNT) OVER (PARTITION BY CUST_ID) >=24 AND SUM(NEW_PAT_CNT)OVER (PARTITION BY CUST_ID)  <=48 THEN '25-48'
WHEN SUM(NEW_PAT_CNT)  OVER (PARTITION BY CUST_ID) >48 THEN '>48'
END) IMS_CUST_ID_GRP, CUST_ID, SUM(NEW_PAT_CNT)
FROM DEXODS.OPUB_ONE_IMS_IDS_FACT fct,
DEXWHS.D_DATE dt,
DEXWHS.D_ACCOUNT_VEEVA ac
WHERE fct.DATE_DIM_KEY = dt.DATE_ID
AND   fct.ACCOUNT_DIM_KEY = ac.ACCOUNT_DIM_KEY
AND   NEW_PAT_CNT >0
GROUP BY CUST_ID

Dataset with CUST_ID included
IMS_CUST_ID_GRP SUM(NEW_PAT_CNT)    CUST_ID
1   1   55671832
1   1   56097728
2-12    4   56106239
2-12    5   56728330
2-12    9   57590869
2-12    2   55609391
2-12    9   55880657
2-12    10  56339375
2-12    3   57371546
25-48   39  55891493
13-24   21  55714333
13-24   22  56542678

Desired Dataset rolled up to IMS_CUST_ID_GRP
IMS_CUST_ID_GRP SUM(NEW_PAT_CNT)
1                2
2-12             42
13-24            43
25-48            39

Answer 1

如果您正在使用GROUP BY进行数据透视查询，则无需使用SUM()作为分析函数。只需正常使用它：

SELECT CUST_ID,
       SUM(CASE WHEN CUST_ID = 1 THEN NEW_PAT_CNT ELSE 0 END) AS '1',
       SUM(CASE WHEN CUST_ID >= 2  AND CUST_ID <= 12 THEN NEW_PAT_CNT ELSE 0 END) AS '2-12',
       SUM(CASE WHEN CUST_ID >= 13 AND CUST_ID <= 24 THEN NEW_PAT_CNT ELSE 0 END) AS '13-24',
       SUM(CASE WHEN CUST_ID >= 24 AND CUST_ID <= 48 THEN NEW_PAT_CNT ELSE 0 END) AS '25-48',
       SUM(CASE WHEN CUST_ID > 48  THEN NEW_PAT_CNT ELSE 0 END) AS '>48'
FROM DEXODS.OPUB_ONE_IMS_IDS_FACT fct
INNER JOIN DEXWHS.D_DATE dt
    ON fct.DATE_DIM_KEY = dt.DATE_ID
INNER JOIN DEXWHS.D_ACCOUNT_VEEVA ac
    ON fct.ACCOUNT_DIM_KEY = ac.ACCOUNT_DIM_KEY
WHERE NEW_PAT_CNT > 0      -- should not be necessary assuming count no less than zero
GROUP BY CUST_ID

请注意，我已使用显式INNER JOIN替换了您的隐式连接。您可能已经听过，应该尽量避免在逗号FROM中添加逗号。

自定义组的SQL Sum Group

1 个答案: