sql - 在访问查询中使用列总和连接三个表

Question

我有如下所示的三个表.. 我需要输出表中所示的输出为此我需要连接三个表并按月顺序订购输出

tbl_MonthList

MonthID   MonthList
1         January
2         February
3         March
4         April
5         May
6         June
7         July
8         August
9         September
10        October
11        November
12        December

tbl_金额：

Month_id     Amount_Received     Customer_id
3             500                 aaa
3            1000                 bbb
4             700                 jjj
5             300                 aaa
5             400                 jjj
5             500                 ppp
7            1000                 aaa
10           1500                 bbb
12            700                 jjj

tbl_Month_Target

MonthID     MonthF_L
1             10000
2            150000
3              1000
4             50000
5              5000
6              3000
7             20000
8             12000
9             34000
10            85000
11            34000
12            45000

我需要如下所示的输出

Month     Total_amount     MonthF_L
January           0          10000
February          0         150000
March          2000           1000
April           700          50000
May            1200           5000
June              0           3000
July           1000          20000
August            0          12000
September         0          34000
October        1500          85000
November          0          34000
December        700          45000

Answer 1

SELECT ML.MonthList AS Month, 
       Sum(A.Amount_Received) AS Total_amount, 
       First(MT.MonthF_L) AS MonthF_L
FROM (tbl_MonthList AS ML 
      INNER JOIN tbl_Month_Target AS MT ON ML.MonthID = MT.MonthID) 
      LEFT JOIN tbl_Amount AS A ON ML.MonthID = A.Month_id
GROUP BY ML.MonthList, ML.MonthID
ORDER BY ML.MonthID

注意：在 MS Access 中，多个连接必须显式嵌套在括号内

Answer 2

试试这个：

select ml.MonthList, sum(a.Amount_Received), mt.MonthF_L from tbl_MonthList ml
left join tbl_Month_Target mt on mt.MonthID = ml.MonthID
left join tbl_Amount a on ml.Month_id = ml.MonthID 
group by ml.MonthList, mt.MonthF_L