Sql server 执行存储过程时显示多部分标识符错误

我有这样一个存储过程：

ALTER PROCEDURE [dbo].[ParkingDeatailsReportnew] 
 @startdate NVARCHAR(100),
  @enddate NVARCHAR(100)AS BEGINDECLARE  @cols AS NVARCHAR(MAX) , @query AS NVARCHAR(MAX)
 SELECT @cols = STUFF((  SELECT DISTINCT ',' + QUOTENAME(Vtype)
  FROM dbo.VType_tbl FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
 SET @query =
    'SELECT  LocName,Date, ' + @cols + '
     from  ( 
            select  l.LocName,v.Vtype, convert(date, dtime) as Date 
            from Transaction_tbl t 
            join VType_tbl v on t.vtid = v.vtid 
where dtime between ''' + @startdate + ''' and ''' + @enddate + ''' 
                and locid IN (SELECT l.Locid FROM dbo.Location_tbl l)
    ) d pivot ( count(Vtype) for Vtype in (' + @cols + ')  ) p '  
EXEC sys.sp_executesql @query
END  

执行时，我遇到如下错误：

ALTER PROCEDURE [dbo].[ParkingDeatailsReportnew] 
 @startdate NVARCHAR(100),
  @enddate NVARCHAR(100)AS BEGINDECLARE  @cols AS NVARCHAR(MAX) , @query AS NVARCHAR(MAX)
 SELECT @cols = STUFF((  SELECT DISTINCT ',' + QUOTENAME(Vtype)
  FROM dbo.VType_tbl FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
 SET @query =
    'SELECT  LocName,Date, ' + @cols + '
     from  ( 
            select  l.LocName,v.Vtype, convert(date, dtime) as Date 
            from Transaction_tbl t 
            join VType_tbl v on t.vtid = v.vtid 
where dtime between ''' + @startdate + ''' and ''' + @enddate + ''' 
                and locid IN (SELECT l.Locid FROM dbo.Location_tbl l)
    ) d pivot ( count(Vtype) for Vtype in (' + @cols + ')  ) p '  
EXEC sys.sp_executesql @query
END  

无法绑定多部分标识符l.LocName

---

如何解决此问题？

非常简单。外部查询没有从lL表中选择任何内容。你只在和locid中使用它。。。子查询。您不能在父查询中使用该子查询中的任何字段，但“一个l.locid”字段除外，并且只能在in。。。比较。

要获取locname，而不是使用子查询，请在联接中使用表名。以下是示例：

ALTER PROCEDURE [dbo].[ParkingDeatailsReportnew] 
 @startdate NVARCHAR(100),
  @enddate NVARCHAR(100)AS BEGINDECLARE  @cols AS NVARCHAR(MAX) , @query AS NVARCHAR(MAX)
 SELECT @cols = STUFF((  SELECT DISTINCT ',' + QUOTENAME(Vtype)
  FROM dbo.VType_tbl FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
 SET @query =
    'SELECT  LocName,Date, ' + @cols + '
     from  ( 
            select  l.LocName,v.Vtype, convert(date, dtime) as Date 
            from Transaction_tbl t 
            join VType_tbl v on t.vtid = v.vtid 
            join dbo.Location_tbl l on t.locid=l.Locid
where dtime between ''' + @startdate + ''' and ''' + @enddate + ''' 
                    ) d pivot ( count(Vtype) for Vtype in (' + @cols + ')  ) p '  
EXEC sys.sp_executesql @query
END  

---

在这里，我删除了子查询，并将Location\u tbl与Transaction\u tbl on LocId列连接起来。

sir，，如何重新编写此查询我希望以升序获取locname。因此，我必须按以下方式给出order BY的位置：“+@startdate+”和“+enddate+”之间的dtime orderby l.locname但获取错误：order BY子句在视图、内联函数和派生表中无效