cte上的TSQL Maxrecursion

Question

我收到此错误:

在语句完成之前,最大递归100已用尽

当我运行这个功能时:

    WITH allDays AS (

        SELECT @DateEarly AS date

        UNION ALL

        SELECT DATEADD(dd, 1, date) as date
        FROM allDays s  
        WHERE DATEADD(dd, 1, date) <= @DateLate


   )
    SELECT *
    from allDays 
    where dbo.isFestivo(date)>0

我试图附加这个选项:

OPTION (MAXRECURSION 200);

但我在"选项"字之前得到一个错误156.你知道为什么吗？

Answer 1

你可能把选项放在错误的地方.它需要在哪里之后

WITH allDays AS (
    SELECT @DateEarly AS date
    UNION ALL
    SELECT DATEADD(dd, 1, date) as date
    FROM allDays s  
    WHERE DATEADD(dd, 1, date) <= @DateLate
)
SELECT *
from allDays 
where dbo.isFestivo(date)>0
option (maxrecursion 200);

但试试这个.它会更快......

select DATEADD(d, number, @dateearly) as [date]
from master..spt_values 
where type='p'
and number<=datediff(d,@dateearly,@datelate)
and dbo.isFestivo(date)>0