如何找到为什么所有数据子集的总和比总数小 1

Question

我有一些获奖数据。每个奖励或赠款都有一个赠款编号和金额以及实体的 ID。我按 ID 总结了奖项的计数和所有奖项的金额。然后我 return 总行集或基于范围检查的子集。

如何找出为什么所有子集的总和总是比总集少一个？这是我的存储过程：

ALTER    Procedure [dbo].[FLAS2_List_Awards_V3_PrepAwards]
/* 
EXECUTE FLAS2_List_Awards_V3_PrepAwards 0
EXECUTE FLAS2_List_Awards_V3_PrepAwards 1
EXECUTE FLAS2_List_Awards_V3_PrepAwards 2
EXECUTE FLAS2_List_Awards_V3_PrepAwards 3
EXECUTE FLAS2_List_Awards_V3_PrepAwards 4
EXECUTE FLAS2_List_Awards_V3_PrepAwards 5
EXECUTE FLAS2_List_Awards_V3_PrepAwards 6
*/
-- populates #TempGrants according to range filter on TotalAmount
(
    @Range  int = 0
                    -- 0 = no filtering 
                    -- 1 = <  million
                    -- 2 = <  million
                    -- 3 = <  million
                    -- 4 = <  million
                    -- 5 = <  million
                    -- 6 = >  million
)
As
-- if calling sproc did not create this table, create here to allow unit testing
IF OBJECT_ID('tempdb..#TempGrants') IS NULL
BEGIN 
CREATE TABLE #TempGrants
(
    ID          nchar(6) NOT NULL
,   TotalAwards decimal (16, 0) NULL
,   TotalAmount decimal (16, 0) NULL
)
END
-- step 1. Summarize grants creating colums for HAVING filter
CREATE TABLE #TempGrantsUnfiltered
(
    ID          nchar(6) NOT NULL
,   TotalAwards decimal (16, 0) NULL
,   TotalAmount decimal (16, 0) NULL
)
insert into #TempGrantsUnfiltered
(
    ID          
,   TotalAwards 
,   TotalAmount 
)
select o.id
      ,COUNT( o.GrantNumber) as TotalAwards
      ,SUM( o.TotalObligatedAmount) as TotalAmount 
from dbo.FLAS2_Grants o
group BY O.ID
-- step 2. HAVING filter returns grant totals per range test
insert into #TempGrants
(
    ID          
,   TotalAwards 
,   TotalAmount 
)
select o.id
      ,TotalAwards
      ,TotalAmount 
from #TempGrantsUnfiltered o
WHERE
    CASE 
        When @Range = 0 Then 1  
        When @Range = 1 AND TotalAmount < 1000000 Then 1  
        When @Range = 2 AND TotalAmount BETWEEN  1000001  AND  5000000 Then 1  
        When @Range = 3 AND TotalAmount BETWEEN  5000001  AND 10000000 Then 1  
        When @Range = 4 AND TotalAmount BETWEEN 10000001  AND 15000000 Then 1  
        When @Range = 5 AND TotalAmount BETWEEN 15000001  AND 20000000 Then 1  
        When @Range = 6 AND TotalAmount > 20000000 Then 1  
        ELSE 0      -- where 0 = 1 rejects record
        END = 1     -- where 1 = 1 allows record
order by TotalAmount desc

当我执行以下块时：

EXECUTE FLAS2_List_Awards_V3_PrepAwards 0
EXECUTE FLAS2_List_Awards_V3_PrepAwards 1
EXECUTE FLAS2_List_Awards_V3_PrepAwards 2
EXECUTE FLAS2_List_Awards_V3_PrepAwards 3
EXECUTE FLAS2_List_Awards_V3_PrepAwards 4
EXECUTE FLAS2_List_Awards_V3_PrepAwards 5
EXECUTE FLAS2_List_Awards_V3_PrepAwards 6

我使用 SQL Management Studio 在消息 window 中得到以下结果：

(597 row(s) affected)

(597 row(s) affected)

(597 row(s) affected)

(65 row(s) affected)

(597 row(s) affected)

(341 row(s) affected)

(597 row(s) affected)

(89 row(s) affected)

(597 row(s) affected)

(39 row(s) affected)

(597 row(s) affected)

(23 row(s) affected)

(597 row(s) affected)

(39 row(s) affected)

我无法解释子集中缺失的行或总集中的额外行。有什么想法吗？

65 + 341 + 89 + 39 + 23 +39 = 596 < 597

Answer 1

将 case 表达式中的 TotalAmount < 1000000 更改为 TotalAmount < 1000001。

如何找到为什么所有数据子集的总和比总数小 1

How to find why sum of all subsets of data is 1 less than total

tsql

sql-server

aggregate-functions

where

sql-server-2008