如何改善“关键字'选择'附近的语法不正确”。

Question

该查询给我“关键字'选择'附近的语法不正确”。 请在粗体字区域下方查看。

declare @date1 smalldatetime, @date2 smalldatetime, @page nvarchar(100) ,@sum int
select @date1='2009-06-06',@date2='2009-06-13',@page='Tüm Sayfalar'
set @sum = select Sum(t.[VISITINGCOUNT]) from
(        
select count(page) as [VISITINGCOUNT],                 
     cast(DATENAME ( year ,DATE)+'-'+DATENAME (month ,DATE)+
     '-'+DATENAME (day ,DATE) as smalldatetime)  as [DATE]               
    from scr_StatisticaLog                
    where Date between @date1 and  @date2  
          and (Page=@page or  @page='Tüm Sayfalar')  and ProcessType='PageView'           
GROUP BY 
cast(DATENAME ( year ,DATE)+
'-'+DATENAME (month ,DATE)+
'-'+DATENAME (day ,DATE) as smalldatetime)) as t    

select 100*(t.[VISITINGCOUNT]/@sum),t.[DATE] from        
(        
select count(page) as [VISITINGCOUNT],                 
     cast(DATENAME ( year ,DATE)+'-'+DATENAME (month ,DATE)+
     '-'+DATENAME (day ,DATE) as smalldatetime)  as [DATE]               
    from scr_StatisticaLog                
    where Date between @date1 and  @date2  
          and (Page=@page or  @page='Tüm Sayfalar')  and ProcessType='PageView'           
GROUP BY 
cast(DATENAME ( year ,DATE)+
'-'+DATENAME (month ,DATE)+
'-'+DATENAME (day ,DATE) as smalldatetime)) as t   

Answer 1

我不相信你可以有SET @var = SELECT ...

请尝试以下操作：

SELECT @sum = Sum(t.[VISITINGCOUNT]) from ...

我还要说的是，您正在做的全部工作就是对子查询中的单个列求和，因此没有必要进行分组依据或返回第二列。

您基本上是在统计各个组中的记录数，然后将所有组加在一起。 如果需要的话，只计算总数的总页数要快得多。

以下内容会简单得多：

SELECT @sum = COUNT(page) FROM scr_StatisticaLog                
   WHERE Date BETWEEN @date1 AND  @date2  
   AND (Page=@page OR  @page='Tüm Sayfalar') AND ProcessType='PageView'

Answer 2

尝试改变

set @sum = select Sum(t.[VISITINGCOUNT]) from

至

select @sum = Sum(t.[VISITINGCOUNT]) from

尚未测试它是否有效，只是它可以正确解析而没有错误。

Answer 3

如果要通过SSMS执行此操作，则应在执行脚本之前尝试从菜单启用“ SQLCMD模式”。

Answer 4

declare @date1 smalldatetime, @date2 smalldatetime, @page nvarchar(100) ,@sum int
select @date1='2009-06-06',@date2='2009-06-13',@page='Tüm Sayfalar'

--Changed here
select @sum = Sum(t.[VISITINGCOUNT]) from
(        
select count(page) as [VISITINGCOUNT],                 
     cast(DATENAME ( year ,DATE)+'-'+DATENAME (month ,DATE)+
     '-'+DATENAME (day ,DATE) as smalldatetime)  as [DATE]               
    from scr_StatisticaLog                
    where Date between @date1 and  @date2  
          and (Page=@page or  @page='Tüm Sayfalar')  and ProcessType='PageView'           
GROUP BY 
cast(DATENAME ( year ,DATE)+
'-'+DATENAME (month ,DATE)+
'-'+DATENAME (day ,DATE) as smalldatetime)) as t    




select 100*(t.[VISITINGCOUNT]/@sum),t.[DATE] from        
(        
select count(page) as [VISITINGCOUNT],                 
     cast(DATENAME ( year ,DATE)+'-'+DATENAME (month ,DATE)+
     '-'+DATENAME (day ,DATE) as smalldatetime)  as [DATE]               
    from scr_StatisticaLog                
    where Date between @date1 and  @date2  
          and (Page=@page or  @page='Tüm Sayfalar')  and ProcessType='PageView'           
GROUP BY 
cast(DATENAME ( year ,DATE)+
'-'+DATENAME (month ,DATE)+
'-'+DATENAME (day ,DATE) as smalldatetime)) as t   

Answer 5

如果您坚持使用SET，则将整个子查询括在括号（）中

set @sum = （ select Sum(t.[VISITINGCOUNT]) from ....... ）

否则将变量赋值更改为其他答案建议的' SELECT @var = '