查询多个表，包括 SUM

Question

我正在寻找正确的语法

我可以设置不同的查询，但我正在寻找一个查询

表格：

T1
Country   Metal    Date       Pnum
Austria   Gold     20-Dec-18  P31182
Austria   Gold     20-Dec-18  P31181
Belgium   Grass    6-Dec-17   P30703
Italy     Gold     16-Nov-17  P30702
Zimbabwe  Copper   8-Jul-17   P29999

T2
Pnum    T  Week     Type  Color Descr               Status    Buy
P31182  2  2019-23  Apple Black Description one     Ready     200
P31181  1  2019-23  Apple Black Description two     Ready     150
P30703  2  2019-28  Apple Black Description four    Waiting   120

T3
Work    Hr    Pr    Pnum
AFNA    4     3.50  P31182
CONS    3     1.25  P31182
TREX    2.5   3.00  P31182
AFNA    3     3.50  P31181
CONS    3     1.25  P31181
TREX    2.5   3.00  P31181
AFNA    4     3.50  P30703
MEET    5     5.00  P30703
TREX    2.5   3.00  P30703

T4
Used      Pnum
3010.50   P31182
500.00    P31182
2254.47   P31181
555.55    P30703
155.25    P30703

期望的结果：（减去括号中的计算，这是为了清楚起见）

Country Date      Week    Type  Color   Metal Pnum    Descr            Status   Hr*T    Hr*T*Pr      Used*T      Buy*T      Work
Austria 20-Dec-18 2019-23 Apple Black   Gold  P31182  Description one  Ready    19      50.50        7021        400                
Austria                                                                         (4*2)   (4*2*3.50)   (3010.50*2) (200*2)    AFNA
Austria                                                                         (3*2)   (3*2*1.25)   (500*2)                CONS
Austria                                                                         (2.5*2) (2.5*2*3)                           TREX
Austria 20-Dec-18 2019-23 Apple Black   Gold  P31181  Description two  Ready    8.5     25.50        2254.47     150                
Austria                                                                         (2.5*1) (2.5*1*3.00) (2254.47*1) (150*1)    AFNA
Austria                                                                         (3*1)   (3*1*3.50)                          CONS
Austria                                                                         (2.5*1) (2.5*1*3.00)                        TREX
Belgium  6-Dec-17 2019-28 Apple Black   Grass P30703  Description four Waiting  23      93.00        1421.60     240                
Belgium                                                                         (4*2)   (4*2*3.50)   (555.55*2)  (120*2)    AFNA
Belgium                                                                         (5*2)   (5*2*5.00)   (155.25)               MEET
Belgium                                                                         (2.5*2) (2.5*2*3)                           TREX

如果我这样做，我会在 SUM 列下得到错误的总数

SELECT Country, Date, Week, Type, Color, Metal, Pnum, Desc, Status, SUM(Hr*T), SUM(Hr*T*Pr), (Used*T), (Buy*T), Work
FROM T2
INNER JOIN T1 table1 on table1.Pnum = table2.Pnum
INNER JOIN T3 table3 on table3.Pnum = table2.Pnum
INNER JOIN T4 table4 on table4.Pnum = table2.Pnum
GROUP BY Pnum

编辑 抱歉，我忘了在第一个表中包含一个 Pnum。我会添加它，并会玩弄答案。 表 T1 不是很重要。它只需要那里的一些信息，具体取决于 T2 中的 Pnum

Answer 1

尝试这样的事情（对于模糊的参考表示歉意，但您的原始示例似乎已经从现实中有所简化）：

; with CTE As 
     (Select Country, Date, Week, Pnum.... -- the rest of your columns here
     , sum(HR*T),... -- the rest of your aggregations here
     , '' as Work
     From T1
     Inner Join T2... -- the already working joins you have here
     Group by Country, Date, Week, Pnum... -- repeat the columns from the first line here

     union all

     Select distinct '', '', '', Pnum... --Add a '' here for each column that you want to be blank, otherwise pull the column name
     , Work -- retain this column
     From T3)

select * from CTE
order by Pnum, case when Work = '' then 1 else 2 end -- to sort the results the way you have them

基本上，您是分别创建聚合行和“工作”行，然后将它们组合到一个表中，并对结果进行排序以将它们“组合”在一起。