Question

我正在尝试使用以下sql创建视图

   create view v_month_days
   as
   with C(TheDate) as
   (
      select CAST('01/01/2014' AS DATETIME)
      union all
      select dateadd(day, 1, C.TheDate)
      from C
      where C.TheDate < CONVERT(VARCHAR (8), (DATEADD(yy, DATEDIFF(yy,0,getdate()) + 1, -1)),112)
   )
   select
     cast(dateadd(month, datediff(month, 0, C.TheDate), 0) as date) as Month,
     count(*) as DayCount
   from C
   group by dateadd(month, datediff(month, 0, C.TheDate), 0)
   option (maxrecursion 0);

但我收到以下消息：

“Msg 156，Level 15，State 1，Procedure v_month_days，Line 15 [Batch Start Line 0] 关键字'option'“
附近的语法不正确

我还有其他选择吗？

Answer 1

首先创建视图而不使用Option语句。

create view v_month_days
    as
    with C(TheDate) as
    (
      select CAST('01/01/2014' AS DATETIME)
      union all
      select dateadd(day, 1, C.TheDate)
      from C
      where C.TheDate < CONVERT(VARCHAR (8), (DATEADD(yy, DATEDIFF(yy,0,getdate()) + 1, -1)),112)
      )
     select cast(dateadd(month, datediff(month, 0, C.TheDate), 0) as date) as Month,
   count(*) as DayCount
   from C
    group by dateadd(month, datediff(month, 0, C.TheDate), 0)

然后，当您从视图中进行选择时，请使用Option语句。

Select Month, DayCount From v_month_days
Option (maxrecursion 0);

创建包含“option”子句的视图

1 个答案: