Question

我试图从数据库中获取数据显示在ASP.NET DataGrid中。

显示上述错误。

这是选择命令：

  public MasterJobList GetListForGrid(int RecCount, int PageNo, string OrderBy)
        {
            strSql = "WITH TempTable AS(Select JobDetails.JobCode,JobDetails.CurrentStatus,MasterModel.Name As ModelNumber,MasterModel.Code As ModelCode,MasterBrand.Code As BrandCode,MasterBrand.Name As BrandName,MasterDeviceType.Code As DeviceCode,MasterDeviceType.Name As DType,ROW_NUMBER() OVER (ORDER BY " + OrderBy + ") AS RowNumber From JobDetails JobDetails Inner Join MasterDeviceType ON JobDetails.DType = MasterDeviceType.Code Inner Join MasterBrand ON JobDetails.BCode = MasterBrand.Code Inner join MasterModel ON JobDetails.ModelNumber = MasterModel.Code WHERE 1 = 1) SELECT * FROM TempTable WHERE RowNumber BETWEEN {2} AND {3}";  
            MasterJobList objList = new MasterJobList();
            DataTable dt = new DataTable();
            dt = objDB.GetDataTableFromSQL(strSql);
            if (dt != null)
            {
                foreach (DataRow Dr in dt.Rows)
                {
                    jobs obj = new jobs();
                    obj.JobCode =Convert.ToInt32(Dr["JobCode"].ToString());

                    if (Dr["DType"] != DBNull.Value)
                        obj.DType = Dr["DType"].ToString();
                    else
                        obj.DType = "";

                    if (Dr["BrandName"] != DBNull.Value)
                        obj.BrandName = Dr["BrandName"].ToString();
                    else
                        obj.BrandName = "";

                    if (Dr["ModelNumber"] != DBNull.Value)
                        obj.ModelNumber = Dr["ModelNumber"].ToString();
                    else
                        obj.ModelNumber = "";

                    if (Dr["CurrentStatus"] != DBNull.Value)
                        obj.CurrentStatus = Dr["CurrentStatus"].ToString();
                    else
                        obj.CurrentStatus = "";

                  objList.Add(obj);
                }
            }
            return objList;
        }

确切的错误是：

异常详细信息：System.Data.SqlClient.SqlException：不正确关键字＆＃39; OVER＆＃39;附近的语法。

请查看我的完整代码......

Answer 1

您的ROW_NUMBER - ＆＃34;列＆＃34;来自JOIN s。

将其更改为：

string sql = @"
WITH TempTable AS 
(
    Select 
       JobDetails.JobCode,
       JobDetails.CurrentStatus,
       MasterModel.Name As ModelNumber,
       MasterModel.Code As ModelCode,
       MasterBrand.Code As BrandCode,
       MasterBrand.Name As BrandName,
       MasterDeviceType.Code As DeviceCode,
       MasterDeviceType.Name As DType,
       ROW_NUMBER() OVER (ORDER BY {0}) AS RowNumber
    From JobDetails JobDetails  
    Inner Join MasterDeviceType 
       ON JobDetails.DType = MasterDeviceType.Code 
    Inner Join MasterBrand 
       ON JobDetails.BCode = MasterBrand.Code 
    Inner join MasterModel 
       ON JobDetails.ModelNumber = MasterModel.Code, 
    WHERE {1}
) 
SELECT * FROM TempTable WHERE RowNumber BETWEEN {2} AND {3}";

现在使用sql = String.Format(sql, orderBy, filter, rnStart, rnEnd)分配值。

变量可以是：

string orderBy = "ModelNumber ASC";
string filter  = "BrandName = 'Sony'";
int rnStart = PageNo == 1 ? 1 : ((PageNo - 1) * RecCount) + 1;
int rnEnd   = PageNo == 1 ? RecCount : PageNo * RecCount;

更新：根据您的修改显示完整方法（至少是相关代码）。

public MasterJobList GetListForGrid(int RecCount, int PageNo, string OrderBy)
{
    string strSql = @"
WITH TempTable AS 
(
    Select 
       JobDetails.JobCode,
       JobDetails.CurrentStatus,
       MasterModel.Name As ModelNumber,
       MasterModel.Code As ModelCode,
       MasterBrand.Code As BrandCode,
       MasterBrand.Name As BrandName,
       MasterDeviceType.Code As DeviceCode,
       MasterDeviceType.Name As DType,
       ROW_NUMBER() OVER (ORDER BY {0}) AS RowNumber
    From JobDetails JobDetails  
    Inner Join MasterDeviceType 
       ON JobDetails.DType = MasterDeviceType.Code 
    Inner Join MasterBrand 
       ON JobDetails.BCode = MasterBrand.Code 
    Inner join MasterModel 
       ON JobDetails.ModelNumber = MasterModel.Code, 
    WHERE {1}
) 
SELECT * FROM TempTable WHERE RowNumber BETWEEN {2} AND {3}";

    int rnStart = PageNo == 1 ? 1 : ((PageNo - 1) * RecCount) + 1;
    int rnEnd   = PageNo == 1 ? RecCount : PageNo * RecCount;
    strSql = String.Format(strSql, OrderBy, "1=1", rnStart, rnEnd);

    DataTable dt = objDB.GetDataTableFromSQL(strSql);
    // ...
    return objList;
}

Answer 2

请在ssms中检查此示例并相应更改。

declare @t table(name varchar(50))

insert into @t values ('a'),('b'),('c'),('d'),('e')

select ROW_NUMBER() over ( order by name)
, name 

from @t

检查评论，您只需按值

应用“orderby”

 WITH temptable
     AS (SELECT jobdetails.jobcode,
                jobdetails.currentstatus,
                mastermodel.NAME              AS ModelNumber,
                mastermodel.code              AS ModelCode,
                masterbrand.code              AS BrandCode,
                masterbrand.NAME              AS BrandName,
                masterdevicetype.code         AS DeviceCode,
                masterdevicetype.NAME         AS DType,
                Row_number()
                  OVER (
                    ORDER BY " + orderby + ") AS RowNumber  --here you have to assign the order by  value
         FROM   jobdetails JobDetails
                INNER JOIN masterdevicetype
                        ON jobdetails.dtype = masterdevicetype.code
                INNER JOIN masterbrand
                        ON jobdetails.bcode = masterbrand.code
                INNER JOIN mastermodel
                        ON jobdetails.modelnumber = mastermodel.code
         WHERE  1 = 1)
SELECT *
FROM   temptable
WHERE  rownumber BETWEEN {2} AND {3}

SqlCommand：关键字＆＃39; OVER＆＃39;附近的语法不正确

2 个答案: