SQL Server的SQL语句 - 更新记录

Question

我有如下数据：

我需要使用column id, region, company, dept, subdept and amountsepend更新Matching_id和Matching_Type。逻辑是：

Sum AmountSepend by Region, Company, Dept and SubDept。如果总金额为0，那么Matching_Type是'匹配'，而Matching_id是匹配记录的ID的组合，否则'不匹配'且Matching_id是ID。 ** SUM表示不论AmountSepend是正数还是负数，对于相同条件的所有记录的总数。

另一个重要的标准是，如果该事务是单个记录，通过各地区分组意总计数，公司，DEPT和SubDept为1，则相配的类型不匹配，Matching_UID是ID不管AmountSepend是0或正/负值。实例ID 8

下面是输出：

这里的表和数据的脚本

CREATE TABLE [dbo].[StackoverflowQuest](
[id] [int] NOT NULL, 
[Region] [varchar](50) NULL, 
[Company] [varchar](50) NULL, 
[Dept] [varchar](50) NULL, 
[SubDept] [varchar](50) NULL, 
[AmountSepend] [float] NULL, 
[Matching_id] [varchar](100) NULL, 
[Matching_Type] [varchar](100) NULL 
) ON [PRIMARY] 

我怎么能取得这样的结果？任何帮助/暗示将不胜感激

Answer 1

CREATE TABLE #Table(Id INT,Region VARCHAR(100),Company INT,Dept INT,SubDept  
INT,AmtSpend INT,MatchingId VARCHAR(100),MatchingType VARCHAR(100)) 

INSERT INTO #Table(Id ,Region ,Company , Dept ,SubDept ,AmtSpend) 
SELECT 1,'NAM',12378,1,NULL,900 UNION ALL 
SELECT 2,'NAM',12378,1,NULL,-900 UNION ALL 
SELECT 3,'NAM',12370,1,23,1000 UNION ALL 
SELECT 4,'ASA',1234,9,12,5000 UNION ALL 
SELECT 5,'NAM',12370,1,23,-1000 UNION ALL 
SELECT 6,'ASA',1234,9,12,800 UNION ALL 
SELECT 7,'ASA',1234,9,12,-600 UNION ALL 
SELECT 8,'ASA',12311,6,NULL,200 

UPDATE #Table SET MatchingId = MatchIds,MatchingType = 'Match' 
FROM 
(
    SELECT T2.Company,STUFF((SELECT ',' + CAST(T3.Id AS VARCHAR) FROM #Table  
    T3 WHERE T2.Company = T3.Company FOR XML PATH('')),1,1,'') MatchIds 
    FROM #Table T2 
    JOIN 
    (
    SELECT T1.Company Company,SUM(T1.AmtSpend) Total 
    FROM #Table T1 
    GROUP BY T1.Company 
    HAVING SUM(T1.AmtSpend) = 0 
)A ON A.Company = T2.Company 
    GROUP BY T2.Company 
) A 
WHERE A.Company = #Table.Company 


UPDATE #Table SET MatchingId = CAST(Id AS VARCHAR),MatchingType = 'Not 
Match' WHERE ISNULL(MatchingId,'') = '' 

SELECT * FROM #Table