Question

我创建了这个sql动态字符串但是在运行时此错误显示＆＃34;关键字附近的语法错误＆＃39; FOR＆＃39;。＆＃34;

declare @cols as  nvarchar(max)
       ,@query as nvarchar(max);
set @cols = stuff(
                   (select distinct ','+quotename(MatName) from viewProjVsMat
                    FOR xml path(''),type).value('.','nvarchar(max)')
                 ,1,1,'');

set @query = 'select ProjName
                    ,'+@cols+'
            from viewProjVsMat
            pivot (Monut for MatName in ('+@cols+')
                  ) p';


execute(@query)

Answer 1

问题在于

行

pivot (Monut for MatName in ('+@cols+')

此处，Monut需要包含在聚合函数中，例如sum，max，avg等。

例如：

pivot (SUM(Monut) for MatName in ('+@cols+')

有关PIVOT的更多信息，请参阅here。

Answer 2

使用聚合函数取决于您的要求，如AVG，Min，Max

  pivot (
                AVG(Monut) for MatName in ('+@cols+')
                      ) p';

您修改后的代码

 declare @cols as  nvarchar(max)
           ,@query as nvarchar(max);
    set @cols =
     stuff(
                       (select distinct ','+quotename(MatName) from viewProjVsMat
                        FOR xml path(''),type).value('.','nvarchar(max)')
                     ,1,1,'');

    set @query = 'select ProjName
                        ,'+@cols+'
                from viewProjVsMat
                pivot (
                AVG(Monut) for MatName in ('+@cols+')
                      ) p';


    execute(@query)
    Print @query

关键字＆＃39; FOR＆＃39;附近的语法不正确在运行sql动态查询

2 个答案: