c# - 使用 C# 执行 SQLCommand 时出错

Question

我是使用 C# (Visual Studio 2010) 的 ADO.NET 的新手。使用 LinqToSql 不是一种选择，因为底层数据库是 Compact Edition 3.5(不幸)。

下面显示的代码出现错误:“解析查询时出错。[ token 行号 = 2， token 行偏移量 = 38，错误 token = AgentName]”

谁能告诉我我做错了什么？

 using (SqlCeConnection oConn = new SqlCeConnection(connectionstring))
        {
            string strSql = @"select 
                        a.name as 'AgentName',
                        t.description as 'JobType',
                        s.description as 'Status',
                        count(j.statusid) as 'Count'
                    from 
                        jobs as j 
                            inner join agents as a on j.agentid = a.id
                            inner join statusdictionary as s on j.statusid = s.id
                            inner join jobtypedictionary as t on j.jobtypeid = t.id
                    where 
                        convert(datetime,starttime,0) between @FirstDate and @LastDate 
                        AND j.JobTypeID = @JobTypeID AND j.AgentID = @AgentID
                    group by 
                        s.description, 
                        t.description, 
                        a.name order by a.name,     
                        t.description";
            SqlCeCommand oCmd = new SqlCeCommand(strSql, oConn);

            SqlCeParameter fdparam = new SqlCeParameter();
            fdparam.ParameterName = "@FirstDate";
            fdparam.Value = firstdate;
            oCmd.Parameters.Add(fdparam);

            SqlCeParameter ldparam = new SqlCeParameter();
            ldparam.ParameterName = "@LastDate";
            ldparam.Value = lastdate ;
            oCmd.Parameters.Add(ldparam);

            SqlCeParameter JIDparam = new SqlCeParameter();
            JIDparam.ParameterName = "@JobTypeID";
            JIDparam.Value = jobtypeid;
            oCmd.Parameters.Add(JIDparam);

            SqlCeParameter AIDparam = new SqlCeParameter();
            AIDparam.ParameterName = "@AgentID";
            AIDparam.Value = jobtypeid;
            oCmd.Parameters.Add(AIDparam);

            oConn.Open();
            SqlCeDataReader oReader = oCmd.ExecuteReader();

Answer 1

我认为您需要去掉“AgentName”周围的引号。