Question

我有一个更大的查询的以下部分（外部申请被用于超出此问题范围的原因）：

select top 100 *
from (
    select SSN, Program, Year, Cycle,
        case when (lead(Year,1,0) over (partition by SSN, Program order by Year, Cycle)=0 and Year != last_value(Year) over(order by Year ROWS between unbounded preceding and unbounded following))
            or (lead(Year,1,0) over (partition by SSN, Program order by Year, Cycle)-1900)*2+lead(Cycle,1,0) over (partition by SSN, Program order by Year, Cycle)-((Year-1900)*2+Cycle)>2
        then ((Year-1900)*2+Cycle)*2 else null end as ExitQuarter
    from dbo.Temp_Cohort
    where Program!='BSG' and Program!='BSD'
) as R
outer apply
(
    select sum(case when (Year-1900)*4+Quarter>R.ExitQuarter and (Year-1900)*4+Quarter<R.ExitQuarter+5 then Wage else null end) as Wage1,
    sum(case when (Year-1900)*4+Quarter>R.ExitQuarter+4 and (Year-1900)*4+Quarter<R.ExitQuarter+9 then Wage else null end) as Wage2,
    sum(case when (Year-1900)*4+Quarter>R.ExitQuarter+8 and (Year-1900)*4+Quarter<R.ExitQuarter+13 then Wage else null end) as Wage3,
    sum(case when (Year-1900)*4+Quarter>R.ExitQuarter+12 and (Year-1900)*4+Quarter<R.ExitQuarter+17 then Wage else null end) as Wage4,
    sum(case when (Year-1900)*4+Quarter>R.ExitQuarter+16 and (Year-1900)*4+Quarter<R.ExitQuarter+21 then Wage else null end) as Wage5
    from dbo.Wage_Hist
    where SSN=R.SSN
) as W

执行时，我收到以下错误：Multiple columns are specified in an aggregated expression containing an outer reference. If an expression being aggregated contains an outer reference, then that outer reference must be the only column referenced in the expression.

您是否有解决方法或修复方法的建议？

Answer 1

select top 100 *
from (
    select SSN, Program, Year, Cycle,
        case when (lead(Year,1,0) over (partition by SSN, Program order by Year, Cycle)=0 and Year != last_value(Year) over(order by Year ROWS between unbounded preceding and unbounded following))
            or (lead(Year,1,0) over (partition by SSN, Program order by Year, Cycle)-1900)*2+lead(Cycle,1,0) over (partition by SSN, Program order by Year, Cycle)-((Year-1900)*2+Cycle)>2
        then ((Year-1900)*2+Cycle)*2 else null end as ExitQuarter
    from dbo.Temp_Cohort
    where Program!='BSG' and Program!='BSD'
) as R
outer apply
(
    SELECT [1] Wage1, [2] Wage2, [3] Wage3, [4] Wage4, [5] Wage5
    FROM (
        SELECT Wage, (R.ExitQuarter-((Year-1900)*4+Quarter)+3) / 4) WagePeriod
        FROM dbo.Wage_Hist
        WHERE SSN=R.SSN
    ) p1
    PIVOT(SUM(Wage) FOR WagePeriod IN ([1],[2],[3],[4],[5])) p2
) as W

Answer 2

这是最终的解决方案...... Anon让我到了正确的地方，但只需要一些语法和数学修复。

select top 100 *
from (
    select SSN, Program, Year, Cycle,
        case when (lead(Year,1,0) over (partition by SSN, Program order by Year, Cycle)=0 and Year != last_value(Year) over(order by Year ROWS between unbounded preceding and unbounded following))
            or (lead(Year,1,0) over (partition by SSN, Program order by Year, Cycle)-1900)*2+lead(Cycle,1,0) over (partition by SSN, Program order by Year, Cycle)-((Year-1900)*2+Cycle)>2
        then ((Year-1900)*2+Cycle)*2 else null end as ExitQuarter
    from dbo.Temp_Betty_Cohort
    where Program!='BSG' and Program!='BSD'
) as R
outer apply
(
    select [1] as Wage1, [2] as Wage2, [3] as Wage3, [4] as Wage4, [5] as Wage5
    from
    (
        select Wage, round(((Year-1900)*4+Quarter-R.ExitQuarter+3)/4,0,1) as Period
        from dbo.Wage_Hist
        where SSN=R.SSN
    ) as S
    pivot
    (
        sum(Wage) for Period in ([1],[2],[3],[4],[5])
    ) as P
) as H

包含外部引用的聚合表达式中的多个列

2 个答案: