Question

无法找到合适的例子（或者我只是在寻找错误的方向）。

根据传入的参数值，我需要更改WHERE的{{1}}条件。

例如，我得到参数SELECT，其值为＆＃39;全部＆＃39;我需要做这样的事情：

@bookType

看起来很简单，但我在WITH里面需要这个IF：

IF @bookType = 'All'
  SELECT * FROM tBooks
  WHERE BookType != 'Template' AND BookGroup='Library'
ELSE
  SELECT * FROM tBooks
  WHERE BookType = @bookType AND BookStatus=@bookStatus

这是行不通的，因为我开始接收WITH Books AS ( IF... ... ), bookIds AS ( ... ... )。究竟我做错了什么？或者也许可以在'Incorrect syntax near IF'语句中隐藏IF（根据参数值改变）？

Answer 1

;
WITH Books AS (

     SELECT * FROM tBooks
        WHERE
            (@BookType = 'All'  AND BookType != 'Template' AND BookGroup='Library')
            OR
            (@BookType <> 'All' AND BookType = @bookType AND BookStatus=@bookStatus)

)

如何在WITH里面使用IF语句？

1 个答案: