Question

我有客户，他们在几天或几周内存储数据。但客户只能选择在几天或一周内存储数据。见下面的例子

ClientID  StoreID    period      hours
1       10      2010-04-19  8.04
1       10      2010-04-20  6.24
1       10      2010-04-21  8.26
1       20      2010-04-22  7.94
1       20      2010-04-23  22.43
1       20      2010-04-24  22.99
2       5       2010-12-19  130.67
2       5       2010-12-26  159.26
2       5       2011-01-02  113.59
2       5       2011-01-09  12.66
2       8       2011-01-16  22.34
2       8       2011-01-23  11.35

现在，我必须将基于客户ID 的时间总计为过去52周至27周和27周才能出现。

实施例： ClientId = 1，从最近52周到27周总小时= 150 ClientId = 1，从过去27周到今天总小时数= 200

ClientId = 2从过去52周到27周总小时= 350 ClientId = 2，从过去27周到今天总小时数= 250。

我需要在T-SQL中使用它。这令我感到困惑。请有人写信给我。

此客户的时间级别还有另一个表格。

Client   time_level
1       Day
2       Week

更新：我们需要根据@clientid

查找已存储的总时数

Answer 1

DECLARE @MondayThisWeek DATETIME
SELECT  @MondayThisWeek = DATEADD(wk,
                             DATEDIFF(wk, 0, GETDATE()),
                             0);

DECLARE @ClientId INT;
SELECT @ClientId = 1;



SELECT  cd.StoreId,
    SUM(cd.HOURS) AS Hours
FROM    ClientData cd
WHERE   cd.Date >= DATEADD(ww, -52, @MondayThisWeek)
    AND cd.Date < DATEADD(ww, -27, @MondayThisWeek)
    AND cd.ClientId = @ClientId 
GROUP BY cd.StoreId;

SELECT  cd.StoreId,
    SUM(cd.HOURS) AS Hours  
FROM    ClientData cd
WHERE   cd.Date >= DATEADD(ww, -27, @MondayThisWeek)
    AND cd.Date < @MondayThisWeek
    AND cd.ClientId = @ClientId
GROUP BY cd.StoreId;

在SQL中根据天数和周数计算数据

1 个答案: