Javascript 根据SQL中的销售百分比创建客户群

我的数据集如下所示

我想用下面的逻辑创建最后一个列集群。需要始终在群集中拾取前3个ID。但有一个条件，在选择前3个ID后，检查该组每个ID的个人ID百分比是否小于等于70。例如，对于ID=1，同样地，对于ID=2500/1000+500+400，检查%为1000/1000+500+400。我们需要检查此组的个人ID。这里，对于所有3个ID，我们都有%SQL Server代码

--create table customers
    --( product varchar (200),
    --ids int,
    --sales numeric(18,4)
    --);


    --INSERT into customers values ('A',1,1000);
    --INSERT into customers values ('A',2,500);
    --INSERT into customers values ('A',3,400);
    --INSERT into customers values ('A',4,300);
    --INSERT into customers values ('A',5,70);
    --INSERT into customers values ('A',6,50);
    --INSERT into customers values ('A',7,40);
    --INSERT into customers values ('A',8,30);
    --INSERT into customers values ('A',9,30);
    --INSERT into customers values ('A',10,30);
    --INSERT into customers values ('A',11,20);

    SET NOCOUNT ON;

    DECLARE @Id INT=0,
            @cluster INT=1,
            @max_irow INT ,
            @max_cust_id INT 
        
    
    IF OBJECT_ID('tempdb..#Customers') IS NOT NULL
    DROP TABLE #Customers

    SELECT  ROW_NUMBER() OVER (ORDER BY ids) AS irow,
        Product,
        Ids,
        ISNULL(Sales,0.00) AS Sales,
        0 AS Cluster 
    INTO #Customers
    FROM customers WITH(NOLOCK)

    SELECT @max_cust_id=@@ROWCOUNT

    IF OBJECT_ID('tempdb..#tmp_Cluster') IS NOT NULL
    DROP TABLE #tmp_Cluster

    SELECT *,CAST(0.0000 AS NUMERIC) AS Percntg 
    INTO #tmp_Cluster 
    FROM #Customers WHERE 1=2

    WHILE(1=1)
    BEGIN

        INSERT INTO #tmp_Cluster(irow,Product,Ids,Sales,Cluster,Percntg )
        SELECT  irow,product,ids,sales,@cluster,sales/SUM(sales) OVER (PARTITION BY ISNULL(Cluster,1))*100
        FROM #Customers
        WHERE Cluster=0 AND irow<=@Id+3

        IF @@ROWCOUNT<3
        BREAK;
     
    
        WHILE(1=1)
        BEGIN
            IF EXISTS(SELECT 1 FROM #tmp_Cluster WHERE Percntg>=70.00)
            BEGIN
            
                SET @max_irow=NULL
                SELECT @max_irow=MAX(irow) FROM #tmp_Cluster

                TRUNCATE TABLE #tmp_Cluster

                INSERT INTO #tmp_Cluster(irow,Product,Ids,Sales,Cluster,Percntg)
                SELECT  irow,product,ids,sales,@cluster,sales/SUM(sales) OVER(PARTITION BY ISNULL(Cluster,1))*100.00
                FROM #Customers
                WHERE Cluster=0 AND irow<=@max_irow+1

            END
            IF NOT EXISTS(SELECT 1 FROM #tmp_Cluster WHERE Percntg>=70.00)
            BEGIN
        
                UPDATE A SET A.Cluster= @cluster
                FROM #Customers A
                INNER JOIN #tmp_Cluster B
                ON A.Product=B.Product
                AND A.Ids=B.Ids
                AND A.irow=B.irow
            END

                SELECT @Id=MAX(Irow) FROM #Customers WHERE Cluster<>0
                SELECT @cluster=MAX(Cluster)+1 FROM #Customers WHERE Cluster<>0

            BREAK;

        END     
 
        TRUNCATE TABLE #tmp_Cluster
    
    END

    SELECT Product,Ids,Sales,Cluster FROM #Customers

---

用您正在使用的数据库标记您的问题。是否总是订购销售？您是否有-ve销售值？