SQL Select 声明为变量

Question

所以我需要在另一个长select中多次使用从一个长select返回的数据。

我可以使用子查询，但我不想多次复制代码，因为我可能需要修改它。

所以我正在尝试做一些事情，比如声明一个临时视图或实现相同目的的事情：

DECLARE @myView as view

SET @myView = (select ob.IdOrden, obs.idarticulo, a.descrip, obs.p1,cc.descrip, SUM(isnull(t.Minutos,0)) Minutos
from Ordenes_Bonos ob
left join (select SUM(DATEDIFF(MINUTE ,FechaIni,FechaFin)) Minutos,IdOrden, IdBono, IdEmpleado 
            from dbo.Pers_Tiempos_Bonos 
            group by IdOrden, IdBono, IdEmpleado) t on t.IdOrden = ob.IdOrden and t.IdBono = ob.IdBono
left join Ordenes_bonos_Salidas obs on obs.idorden = ob.idorden and obs.idbono = ob.IdBono
inner join Colores_cartas cc on cc.idcolor = obs.p1
inner join articulos a on a.idarticulo = obs.idarticulo
where ob.Descrip like 'prod%' and t.minutos > 5 and t.minutos < 1500
GROUP BY ob.IdOrden, obs.idarticulo, a.descrip, obs.p1, cc.descrip)

但这行不通，而且似乎是不允许的。我没有创建永久视图的权限，所以这不是一个选项。

我想要那个，以便稍后我可以执行其他查询：

declare @pp float
set @pp = .4
select @pp as factor, avg(cast(Minutos as float)) as TrimmedMeanP from @TestScores a 
where (select count(*) from @myView aa where aa.Minutos <= a.Minutos) >= (select @pp*count(*) from @myView) 
and (select count(*) from @myView bb where bb.Minutos >= a.Minutos) >= (select @pp*count(*) from @myView)

无需每次都重复第一个。

有什么想法吗？

Answer 1

首先声明动态 @sql 并为此设置查询。稍后将变量 @result 声明为 table 并为新创建的 table 传递 @sql。你能不能这样。

关于sp_executesql

的文档

DECLARE @sql AS NVARCHAR(MAX)

SET @sql = (select ob.IdOrden, obs.idarticulo, a.descrip, obs.p1,cc.descrip, SUM(isnull(t.Minutos,0)) Minutos
from Ordenes_Bonos ob
left join (select SUM(DATEDIFF(MINUTE ,FechaIni,FechaFin)) Minutos,IdOrden, IdBono, IdEmpleado 
            from dbo.Pers_Tiempos_Bonos 
            group by IdOrden, IdBono, IdEmpleado) t on t.IdOrden = ob.IdOrden and t.IdBono = ob.IdBono
left join Ordenes_bonos_Salidas obs on obs.idorden = ob.idorden and obs.idbono = ob.IdBono
inner join Colores_cartas cc on cc.idcolor = obs.p1
inner join articulos a on a.idarticulo = obs.idarticulo
where ob.Descrip like 'prod%' and t.minutos > 5 and t.minutos < 1500
GROUP BY ob.IdOrden, obs.idarticulo, a.descrip, obs.p1, cc.descrip)

DECLARE @results AS TABLE 
        ( 
         --table structure
        )    
INSERT INTO @results EXECUTE sp_executesql @sql

Answer 2

您使用 CTE（通用 Table 表达式）执行此操作，它基本上是一个临时的 table，范围限定为单个查询。

declare @pp float
set @pp = .4

;with CTE as 
    (select 
        ob.IdOrden, 
        obs.idarticulo, 
        a.descrip, 
        obs.p1,cc.descrip, 
        SUM(isnull(t.Minutos,0)) Minutos
    from 
        Ordenes_Bonos ob
        left join 
                (select SUM(DATEDIFF(MINUTE ,FechaIni,FechaFin)) Minutos,IdOrden, IdBono, IdEmpleado 
                from dbo.Pers_Tiempos_Bonos 
                group by IdOrden, IdBono, IdEmpleado) t 
            on t.IdOrden = ob.IdOrden and t.IdBono = ob.IdBono
        left join Ordenes_bonos_Salidas obs 
            on obs.idorden = ob.idorden 
            and obs.idbono = ob.IdBono
        inner join Colores_cartas cc 
            on cc.idcolor = obs.p1
        inner join articulos a 
            on a.idarticulo = obs.idarticulo
where 
    ob.Descrip like 'prod%'
    and t.minutos > 5 
    and t.minutos < 1500
GROUP BY
    ob.IdOrden, 
    obs.idarticulo, 
    a.descrip, 
    obs.p1, 
    cc.descrip)
select
    @pp as factor, 
    avg(cast(Minutos as float)) as TrimmedMeanP 
from @TestScores a 
where 
    (select count(*) from CTE aa where aa.Minutos <= a.Minutos) >= (select @pp*count(*) from CTE) 
    and (select count(*) from CTE bb where bb.Minutos >= a.Minutos) >= (select @pp*count(*) from CTE)

SQL Select 声明为变量

SQL Select statement as variable

sql

tsql

sql-server