Sql server 如何获得分组值

试试这个

SELECT 
       DATEPART(YEAR, a.spdate) AS 'Year',
       DATEPART(wk,a.spdate) AS 'WeekNo',
       MONTH(a.spdate) As 'Month',
       MIN(DATEADD(wk, DATEDIFF(wk,0,a.date), 0)) AS 'WeekDate',
       SUM(COALESCE(a.value,0)) AS 'Value'
    FROM patient a 
    JOIN dp account ON (a.id = d.id)
WHERE 
 a.id NOT IN (SELECT id FROM doctor)
GROUP BY DATEPART(YEAR,a.spdate),MONTH(a.spdate)

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当你想按月求和时，你为什么要选择月？Hai，如何将月份设为一月、二月，而不是1,2。尝试将此

转换（char（3），a.spdate，0）

Hai，如何将月名和月号都添加到一起你能给我一个例子试试这个月（a.spdate）+“”+convert（char（3），a.spdate，0）作为“月”吗

 SELECT 
   DATEPART(YEAR, a.spdate) AS 'Year',
   MONTH(a.spdate) As 'Month',      
   SUM(COALESCE(a.value,0)) AS 'Value'
FROM patient a 
JOIN dp account ON (a.id = d.id)
WHERE 
 a.id NOT IN (SELECT id FROM doctor)
 GROUP BY DATEPART(YEAR,a.spdate),MONTH(a.spdate)