在数据库时候我设计了学生的分数为nvarchar(50),是为了在从TXT文件中读取数据插入到数据库表时候方便,但是在后期由于涉及到统计问题,比如求平均值等,需要int类型才可以,方法是:Convert(int,字段名).例如:select avg(Convert(int,M_Score)) from temp 建立视图,将视图当表示用 CREATE VIEW temp AS select StudentId, MAX(StudentScore) as M_Score from T_Studen
将矩阵输出到txt文件中的方法,遍寻网络,始见真经!!! fid=fopen('C:Documents and Settingscleantotal.ped','wt');%写入文件路径 matrix=input_mattrix %input_matrix为待输出矩阵 [m,n]=size(matrix); for i=1:1:m for j=1:1:n if j==n
一下代码省略了很多,哈哈哈 a.txt文件 uid,type,pointx,pointy,name1,9,911233763,543857286,区间测速起点3,9,906371086,545335469,区间测速起点 ........ 省略千万行数据,哈哈哈 代码 #!/usr/bin/python # encoding: UTF-8 with open(r"D:\work\a.txt", "r") as f: f.readline() i = 0 for lin
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO; using SmartDeviceProject1.WebReference; using System.Reflection; nam
package cn.itcast; import java.io.File; import java.io.FileReader; import java.io.FileWriter; public class MainClass{ public static void main(String[] args) throws Exception{ FileManager a = new FileManager("a.txt",new char[]{'\n'}); FileManager
package sundemo2; import java.io.File; import java.io.FileReader; import java.io.FileWriter; public class MainClass{ public static void main(String[] args) throws Exception{ FileManager a = new FileManager("E:\\WorkSpace\\SunDemo\\data\\demo\\a.txt&q
using System; using System.Collections.Generic; using System.Data; using System.IO; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebAPIServer.Models { [Serializable] public class Product { publi