Sql 如何找到下一季度值的总和

请在下面查找表结构和数据

CREATE TABLE Table1
    ([FORECAST_YEAR] int, [FORECAST_MONTH] int, [QUARTER] int, [ITEM_MASTER_SID] int, [COMPANY_MASTER_SID] int, [UNITS] int)
;

INSERT INTO Table1
    ([FORECAST_YEAR], [FORECAST_MONTH], [QUARTER], [ITEM_MASTER_SID], [COMPANY_MASTER_SID], [UNITS])
VALUES
    (2016, 1, 1, 18, 172496, 10000),
    (2016, 2, 1, 18, 172496, 11000),
    (2016, 3, 1, 18, 172496, 12000),
    (2016, 4, 2, 18, 172496, 13000),
    (2016, 5, 2, 18, 172496, 14000),
    (2016, 6, 2, 18, 172496, 15000),
    (2016, 7, 3, 18, 172496, 16000),
    (2016, 8, 3, 18, 172496, 17000),
    (2016, 9, 3, 18, 172496, 18000),
    (2016, 10, 4, 18, 172496, 19000),
    (2016, 11, 4, 18, 172496, 20000),
    (2016, 12, 4, 18, 172496, 21000)
;

现在，我必须计算每个公司的主sid和物料主sid的当前值 季度单位和下季度单位。 为此，我使用了下面的查询

SELECT a.FORECAST_YEAR,
       a.FORECAST_MONTH,
       a.QUARTER,
       a.COMPANY_MASTER_SID,
       a.ITEM_MASTER_SID,
       A.UNITS,
       a.PRESENT_QUARTER_VALUE,
       A.Next_month_value,
       Sum(Next_month_value)
         OVER(
           partition BY company_master_sid, item_master_sid, quarter,
                                         [FORECAST_YEAR]) AS next_Quarter_value
FROM   (SELECT *,
               Sum(units)
                 OVER(
                   partition BY company_master_sid, item_master_sid,
                                  quarter, [FORECAST_YEAR]) AS PRESENT_QUARTER_VALUE,
               Lead(units)
                 OVER(
                   partition BY company_master_sid, item_master_sid, 
                                        forecast_month%3
                   ORDER BY forecast_month) AS Next_month_value
        FROM   #Table1)a
ORDER  BY FORECAST_MONTH 

但请建议如何在一次选择中简单地进行上述查询，因为我有两个以上的变量，如表1中的单位，而且我还必须找到这些变量的当前值和下一个季度值

我需要的输出如下所示

FORECAST_YEAR   FORECAST_MONTH  QUARTER COMPANY_MASTER_SID  ITEM_MASTER_SID UNITS   PRESENT_QUARTER_VALUE   NEXT_MONTH_VALUE    NEXT_QUARTER_VALUE
        2016        1               1       172496                  18      10000       33000                       13000       42000
        2016        2               1       172496                  18      11000       33000                       14000       42000
        2016        3               1       172496                  18      12000       33000                       15000       42000
        2016        4               2       172496                  18      13000       42000                       16000       51000
        2016        5               2       172496                  18      14000       42000                       17000       51000
        2016        6               2       172496                  18      15000       42000                       18000       51000
        2016        7               3       172496                  18      16000       51000                       19000       60000
        2016        8               3       172496                  18      17000       51000                       20000       60000
        2016        9               3       172496                  18      18000       51000                       21000       60000
        2016        10              4       172496                  18      19000       60000                       NULL        NULL
        2016        11              4       172496                  18      20000       60000                       NULL        NULL
        2016        12              4       172496                  18      21000       60000                       NULL        NULL 

上面的select查询返回与发布相同的结果集。请建议将查询简化为单个select。

尝试此查询

SELECT T1.[FORECAST_YEAR], T1.[FORECAST_MONTH], T1.[QUARTER], T1.[ITEM_MASTER_SID], T1.[COMPANY_MASTER_SID], T1.[UNITS]
        ,SUM(CASE WHEN T2.[QUARTER] = T1.[QUARTER] THEN T2.[UNITS] ELSE 0 END ) PRESENT_QUARTER_VALUE
        ,SUM(CASE WHEN T2.[FORECAST_MONTH] = T1.[FORECAST_MONTH]+1 THEN T2.[UNITS] ELSE 0 END ) NEXT_MONTH_VALUE
        ,SUM(CASE WHEN T2.[QUARTER] = T1.[QUARTER]+1 THEN T2.[UNITS] ELSE 0 END ) NEXT_QUARTER_VALUE
FROM Table1 T1
INNER JOIN Table1 T2 ON T2.[ITEM_MASTER_SID] = T1.[ITEM_MASTER_SID]  AND T2.[COMPANY_MASTER_SID] = T1.[COMPANY_MASTER_SID] 
GROUP BY T1.[FORECAST_YEAR], T1.[FORECAST_MONTH], T1.[QUARTER], T1.[ITEM_MASTER_SID], T1.[COMPANY_MASTER_SID], T1.[UNITS]

或者你可以试试这个

SELECT [FORECAST_YEAR], [FORECAST_MONTH], [QUARTER], [ITEM_MASTER_SID], [COMPANY_MASTER_SID], [UNITS]
        ,(  SELECT SUM([UNITS]) FROM    Table1  T2 
            WHERE T2.[ITEM_MASTER_SID] = T1.[ITEM_MASTER_SID] 
                AND T2.[COMPANY_MASTER_SID] = T1.[COMPANY_MASTER_SID] 
                AND T2.[QUARTER] = T1.[QUARTER])    PRESENT_QUARTER_VALUE
        ,(  SELECT SUM([UNITS]) FROM    Table1  T2 
            WHERE T2.[ITEM_MASTER_SID] = T1.[ITEM_MASTER_SID] 
                AND T2.[COMPANY_MASTER_SID] = T1.[COMPANY_MASTER_SID] 
                AND T2.[FORECAST_MONTH] = T1.[FORECAST_MONTH]+1)    NEXT_MONTH_VALUE
        ,(  SELECT SUM([UNITS]) FROM    Table1  T2 
            WHERE T2.[ITEM_MASTER_SID] = T1.[ITEM_MASTER_SID] 
                AND T2.[COMPANY_MASTER_SID] = T1.[COMPANY_MASTER_SID] 
                AND T2.[QUARTER] = T1.[QUARTER]+1)  NEXT_QUARTER_VALUE
FROM Table1 T1

它的工作原理是：演示

---

谢谢你写了一个格式良好的问题。不幸的是，我们在这里没有看到足够的图片。你能不能也粘贴输出，因为图片在某些地方被阻止了domains@TheGameiswar我所需的输出与图像中的行相同。我需要一些帮助或建议来简化我的选择查询，因为我不想使用嵌套的选择。请同时粘贴输出，因为图像是blocked@Tarun：您的查询看起来很完美，因为根据您的要求，您需要下一个季度值的总和，为此，您需要使用子选择查询。不能同时使用

LEAD

和

SUM

函数。

;with cte
 as
 (
select 
*,
sum(units) over (partition by quarter) as quartersum
from 
#table1
)
select cte.*,b.*
from cte
outer apply
(
select units,quartersum from #table1 t2
where cte.quarter+1=t2.quarter
)b