我可以使用多个“with”吗？

Question

只是例如

With DependencedIncidents AS 
(
    SELECT INC.[RecTime],INC.[SQL] AS [str] FROM 
    (
     SELECT A.[RecTime] As [RecTime],X.[SQL] As [SQL] FROM [EventView] AS A 
     CROSS JOIN [Incident] AS X 
      WHERE 
       patindex('%' + A.[Col] + '%', X.[SQL]) > 0 
    ) AS INC 
) 

With lalala AS 
(
    SELECT INC.[RecTime],INC.[SQL] AS [str] FROM 
    (
     SELECT A.[RecTime] As [RecTime],X.[SQL] As [SQL] FROM [EventView] AS A 
     CROSS JOIN [Incident] AS X 
      WHERE 
       patindex('%' + A.[Col] + '%', X.[SQL]) > 0 
    ) AS INC 
) 

不起作用。 “错误附近”。

另外我想先使用里面第二个。是真的还是我需要使用临时表？

Answer 1

尝试：

With DependencedIncidents AS 
(
    SELECT INC.[RecTime],INC.[SQL] AS [str] FROM 
    (
     SELECT A.[RecTime] As [RecTime],X.[SQL] As [SQL] FROM [EventView] AS A 
     CROSS JOIN [Incident] AS X 
      WHERE 
       patindex('%' + A.[Col] + '%', X.[SQL]) > 0 
    ) AS INC 
), 
lalala AS 
(
    SELECT INC.[RecTime],INC.[SQL] AS [str] FROM 
    (
     SELECT A.[RecTime] As [RecTime],X.[SQL] As [SQL] FROM [EventView] AS A 
     CROSS JOIN [Incident] AS X 
      WHERE 
       patindex('%' + A.[Col] + '%', X.[SQL]) > 0 
    ) AS INC 
) 

是的，你可以参考通用表公用表表达式定义中的表达式。即使是递归的。这导致一些非常neat tricks。

Answer 2

是 - 只是这样来做：

WITH DependencedIncidents AS 
(
    .... 
), 
lalala AS 
(
    .... 
) 

您不需要重复WITH关键字