【批量新增】-拼接sql字串
阿新 • • 發佈:2019-02-04
現在做的一個專案需要用到批量新增,但是封裝的底層沒有這個方法,所以自食其力,自己來寫。我們用的是拼接sql字串的方法來實現功能。
具體實現流程:首先將需要的資料儲存到實體的list中,然後將這個list傳給我們批量新增的方法。批量新增的方法首先應該開啟資料庫連線,然後開始進行sql字串的拼接,拼接完成後,呼叫sqlhelper方法進行新增。
具體程式碼如下:
#region 批量新增實體 /// <summary> /// 批量新增實體 /// </summary> /// <param name="staffscores"></param> /// <returns></returns> public bool Insert(List<YzQueryStaffScoresEntity> staffscores) { //開啟資料庫連線 SQLHelper sqlHelper = new SQLHelper("data source=192.168.22.239;initial catalog=YzEvaluationSystem;persist security info=True;user id=sa;password=xxx;", true); StringBuilder sbSql = new StringBuilder(); //拼接字串,新增方法 sbSql.Append("insert into YzQueryStaffScoresEntity(ID,StaffID,StaffName,WorkEfficiency,ProfessionalEthics,BusinessAbility,HonestyDiscipline,WorkPerformance,other1,other2,Number,TotalScores,IsUsed) values"); //迴圈實體list,進行拼接 if (staffscores.Count > 1) { for (int i = 0; i < staffscores.Count - 1; i++) { sbSql.Append("('" + staffscores[i].ID + "',"); sbSql.Append("'" + staffscores[i].StaffID + "',"); sbSql.Append("'" + staffscores[i].StaffName + "',"); sbSql.Append(staffscores[i].WorkEfficiency + ","); sbSql.Append(staffscores[i].ProfessionalEthics + ","); sbSql.Append(staffscores[i].BusinessAbility + ","); sbSql.Append(staffscores[i].HonestyDiscipline + ","); sbSql.Append(staffscores[i].WorkPerformance + ","); sbSql.Append(staffscores[i].other1 + ","); sbSql.Append(staffscores[i].other2 + ","); sbSql.Append(staffscores[i].Number + ","); sbSql.Append(staffscores[i].TotalScores + ","); sbSql.Append(1); sbSql.Append("),"); } sbSql.Append("('" + staffscores[staffscores.Count - 1].ID + "',"); sbSql.Append("'" + staffscores[staffscores.Count - 1].StaffID + "',"); sbSql.Append("'" + staffscores[staffscores.Count - 1].StaffName + "',"); sbSql.Append(staffscores[staffscores.Count - 1].WorkEfficiency + ","); sbSql.Append(staffscores[staffscores.Count - 1].ProfessionalEthics + ","); sbSql.Append(staffscores[staffscores.Count - 1].BusinessAbility + ","); sbSql.Append(staffscores[staffscores.Count - 1].HonestyDiscipline + ","); sbSql.Append(staffscores[staffscores.Count - 1].WorkPerformance + ","); sbSql.Append(staffscores[staffscores.Count - 1].other1 + ","); sbSql.Append(staffscores[staffscores.Count - 1].other2 + ","); sbSql.Append(staffscores[staffscores.Count - 1].Number + ","); sbSql.Append(staffscores[staffscores.Count - 1].TotalScores + ","); sbSql.Append(1); sbSql.Append(")"); } //呼叫sqlhelper方法進行新增。 int flag = sqlHelper.ExecuteNonQuery(sbSql.ToString(), System.Data.CommandType.Text); if (flag > 0) { return true; } else { return false; } } #endregion
一開始說要自己寫sql拼接字串的時候還覺得,哇塞,這肯定特別難,我光聽說了,從來沒有見過啊,結果一見之下,發現非常的簡單。所以,不怕不知道,就怕不知道!各位加油