Question

我编写了一个查询，目前已对该查询进行了硬编码以按部门进行过滤。整个查询都按照我想要的方式工作，我可以复制/粘贴该查询数十次，并将所有结果写入临时表，但是我想要一个更简单，更动态的解决方案。有什么方法可以使我的Forecast表中的FullDepartmentFacilityName的不同结果循环吗？我在这段代码中还有其他一些领域也需要相同的值进行硬编码。

'ABC.ALLXYZ'是我要硬编码的内容

================================================ =====

SELECT *
FROM 
[clc].[ForecastTable]
WHERE 
FullDepartmentFacilityName = 'ABC.ALLXYZ'
and
DateColumn = CAST(GETDATE() AS DATE)
and
(
(ROUND (PopCountForecast, 0) > (SELECT MAX(ACT.PopCountActual) 
FROM 
clc.ActualTable ACT 
JOIN [dim].[DepartmentTable] DTD 
    ON DTD.DeptID = ACT.DeptId 
JOIN [dim].[FacilityTable] FD 
    ON FD.FclID = ACT.FclID 
WHERE 
ACT.DateColumn >= DATEADD(DAY, -28, CAST(GETDATE() AS DATE)) 
and DATEPART(WEEKDAY, ACT.DateColumn) = DATEPART(WEEKDAY, GETDATE()) 
and CONCAT(FD.FclName,'.All',DTD.DeptName) = 'ABC.ALLXYZ'))
or
(ROUND (PopCountForecast, 0) < (SELECT MIN(ACT.PopCountActual) 
FROM 
clc.ActualTable ACT 
JOIN [dim].[DepartmentTable] DTD 
    ON DTD.DeptID = ACT.DeptID 
JOIN [dim].[FacilityTable] FD 
    ON FD.FclID = ACT.FclID 
WHERE 
ACT.DateColumn >= DATEADD(DAY, -28, CAST(GETDATE() AS DATE)) 
and DATEPART(WEEKDAY, ACT.DateColumn) = DATEPART(WEEKDAY, GETDATE()) 
and CONCAT(FD.FclName,'.All',DTD.DeptName) = 'ABC.ALLXYZ'))
)

Table Structure
clc.ForecastTable - this is the main table for my query. this table has one column with a concatenated facility/department name I am calling FullDepartmentFacilityName. This table has forecasted Population Counts by facility/department key by day.
Example:
FullDepartmentFacilityName     PopCountForecast    Date
ABC.ALLAAA                     10                  7/16/19
ABC.ALLBBB                     5                   7/16/19
ABC.ALLCCC                     8                   7/16/19
BCA.ALLAAA                     9                   7/16/19
BCA.ALLBBB                     4                   7/16/19
BCA.ALLCCC                     9                   7/16/19

"dim.DepartmentTable" - this has all department IDs and their corresponding names
"dim.FacilityTable" - this has all facility IDs and their corresponding names
"clc.ActualTable" - this table contains real data and has a facility column and department column but not a concatenated facility/department column. This is why I created one in my query.

Answer 1

您尝试过CROSS APPLY吗？您不提供表结构，所以我只能猜测表结构是什么。

SELECT *
FROM (
    SELECT DISTINCT FullDepartmentFacilityName 
    FROM Forecast
) d
CROSS APPLY (
    SELECT *
    FROM [clc].[ForecastTable]
    WHERE FullDepartmentFacilityName = d.FullDepartmentFacilityName
        and DateColumn = CAST(GETDATE() AS DATE)
        and (
            (ROUND (PopCountForecast, 0) > (
                SELECT MAX(ACT.PopCountActual) 
                FROM clc.ActualTable ACT 
                JOIN [dim].[DepartmentTable] DTD ON DTD.DeptID = ACT.DeptId 
                JOIN [dim].[FacilityTable] FD ON FD.FclID = ACT.FclID 
                WHERE ACT.DateColumn >= DATEADD(DAY, -28, CAST(GETDATE() AS DATE)) 
                    and DATEPART(WEEKDAY, ACT.DateColumn) = DATEPART(WEEKDAY, GETDATE()) 
                    and CONCAT(FD.FclName,'.All',DTD.DeptName) = 'ABC.ALLXYZ')
        ) or (
            ROUND (PopCountForecast, 0) < (
                SELECT MIN(ACT.PopCountActual) 
                FROM clc.ActualTable ACT 
                JOIN [dim].[DepartmentTable] DTD ON DTD.DeptID = ACT.DeptID 
                JOIN [dim].[FacilityTable] FD ON FD.FclID = ACT.FclID 
                WHERE ACT.DateColumn >= DATEADD(DAY, -28, CAST(GETDATE() AS DATE)) 
                    and DATEPART(WEEKDAY, ACT.DateColumn) = DATEPART(WEEKDAY, GETDATE()) 
                    and CONCAT(FD.FclName,'.All',DTD.DeptName) = 'ABC.ALLXYZ')
        )
    )
) c

有没有一种方法可以使用我编写的方式使用不同的值列表循环查询？

1 个答案: