获得在同一个查询

Question

我有一个工作的查询，让我的maxDate的最小和最大日期：

SELECT a.client_id AS client_id 
    , a.patientcount AS patientcount 
    , received_date AS maxRecDate 
FROM 
(
    SELECT DISTINCT CLIENT_ID 
    , PATIENT_ID 
    , count(*) over (partition by client_id, patient_id) AS patientcount 
    from f_accession_daily 
) AS a 
JOIN F_ACCESSION_DAILY AS f ON a.CLIENT_ID = f.CLIENT_ID 
    AND a.PATIENT_ID = f.PATIENT_ID 
GROUP BY f.RECEIVED_DATE, a.CLIENT_ID, a.patientcount 
HAVING f.RECEIVED_DATE = MAX(f.received_date) 

在相同的查询，我也想回分钟（f.received_date）。

有没有办法做到这一点？也许与子查询？

Answer 1

我可能失去了一些东西，但我不明白你为什么要通过f.RECEIVED_DATE

分组我想查询可能是：

SELECT a.client_id AS client_id 
    , a.patientcount AS patientcount 
    , max(f.received_date) AS maxRecDate 
    , min(f.received_date) AS minRecDate 
FROM 
(
    SELECT DISTINCT CLIENT_ID 
    , PATIENT_ID 
    , count(*) over (partition by client_id, patient_id) AS patientcount 
    from f_accession_daily 
) AS a 
JOIN F_ACCESSION_DAILY AS f ON a.CLIENT_ID = f.CLIENT_ID 
    AND a.PATIENT_ID = f.PATIENT_ID 
GROUP BY a.CLIENT_ID, a.patientcount 

我没有测试过这一点，但我认为它应该工作。

Answer 2

在您的查询中，添加OR条件以检查MIN日期。解决以供将来参考问题

SELECT a.client_id AS client_id 
, a.patientcount AS patientcount 
, received_date AS maxRecDate 
FROM 
(
SELECT DISTINCT CLIENT_ID 
, PATIENT_ID 
, count(*) over (partition by client_id, patient_id) AS patientcount 
from f_accession_daily 
) AS a 
JOIN F_ACCESSION_DAILY AS f ON a.CLIENT_ID = f.CLIENT_ID 
AND a.PATIENT_ID = f.PATIENT_ID 
GROUP BY f.RECEIVED_DATE, a.CLIENT_ID, a.patientcount 
HAVING f.RECEIVED_DATE = MAX(f.received_date) 
OR f.RECEIVED_DATE = MIN(f.received_date) -- Newly added condition