分两步查询,第一步查询出动态列,第二步使用PIVOT函数。
代码:
List<DataTable> dataTableList = new List<DataTable>(); #region 指标 DataTable dtEvaItemTitle = db.RunTable<Edu_EvaluationRecord>(string.Format(@" select distinct eva.id,eva.name from Edu_EvaluationRecord r left join Edu_QnVolume v on r.queryid=v.id left join Sys_EvaluationItem eva on r.evaitemid=eva.id where v.id={0} order by eva.id",volumeEva.Id)); List<string> evaItemTitleList = new List<string>(); for (int i = 0; i < dtEvaItemTitle.Rows.Count; i++) { evaItemTitleList.Add("[{0}]",dtEvaItemTitle.Rows[i][name].ToString())); } string evaItemTitles = String.Join(string sql = select * from (select stu.name as 姓名,stu.StuNum as 学号,stu.ExamNum as 考号,case when stu.Sex='1' then '男' else '女' end as 姓别,case when stu.Brothers='1' then '否' else '是' end as 是否独生,stu.EduF as 父亲文化,stu.EduM as 母亲文化,r.score as 分数,eva.Name as 题目 from Edu_EvaluationRecord r left join Edu_Student stu on r.userid=stu.id left join Sys_User u on stu.userid=u.id left join Edu_QnVolume v on r.queryid=v.id left join Sys_EvaluationItem eva on r.evaitemid=eva.id where v.id={0}) p pivot (sum(分数) for 题目 in ({1})) as pvt(sql); dt.TableName = volumeEva.Name; dataTableList.Add(dt); #endregion #region 普通 DataTable dtItemTitle = db.RunTable<Edu_EvaluationRecord>( select distinct s.id,s.title from edu_qnanswer ans left join Edu_QnSubject s on s.id=ans.subjectid left join Edu_QnVolume v on s.volumeid=v.id where v.id={0} order by s.idstring> itemTitleList = 0; i < dtItemTitle.Rows.Count; i++) { itemTitleList.Add(titlestring itemTitles = String.Join( volumeGeneral.Name; dataTableList.Add(dt); #endregion
原文地址:https://www.cnblogs.com/s0611163
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。