jmp student

Yesterday to a company interview, was stumped by this problem, hey, and lost a good chance.Come back and think about it.The table structure and data are as follows:The SQL statement implemented:The first implementation isSELECT * FROM student a where a.id in (SELECT b.id from student b where B.classid=a.classid ORDER by grade DESC LIMIT 0,3) ;Looks fine, in fact a lot of, first for MySQL, in (can't use limi

Label:Description of the problem: for the management of post business training information, the establishment of 3 tables: S (S#,SN,SD,SA) S#,sn,sd,sa respectively represents student number, student name, affiliation unit, student age C (C#,CN) C#,CN represents the course number, the course name, respectively SC (S#,C#,G) S#,c#,g respectively represents the

Label:25. Check the records of all students in class 95033 and 95031. SELECT * from STUDENT t,score s where t.sclass=95033 or t.sclass=95031 26, the inquiry existence has 85 points above the course CNO. Select S.cno from score s where s.degree>85 27. Find out the results table of the "computer Department" teacher teaching course. 28, query "computer department" and "Electronic Engineering department" different titles of teachers Tname and Prof. Sel

1. Database Connection Method The SQL connection method is used here. ConnectString="provider=sqloledb.1;persist security info=false;User ID=sa;PassWord=hanhan12121; Initial Catalog=student;Data Source=. One thing to mention here. If it is a local connection, data source can be written into the User Name of the Local Machine, such as: Data Source = Lenovo-PC or directly replaced by a point in the English state If the user name of the local machine i

This is the first academic leave of the project, the main part of the train on the home completed, after a few days to continue processing, today finally completed, this is the student management system of the beta version, the follow-up will continue to improve.Student information includes: School number, name, age, gender, date of birth, address, telephone, e-mail, etc. Try to design a student information

JavaBean exercises-encapsulate student information and javabean Encapsulation Compile a JavaBean object that encapsulates student information, call this object on the page, and output the student information to the page. 1 package com. sp. test; 2 3 public class Student {4 private String name; 5 private int xuehao; 6 p

#information for three studentsLloyd = { "name":"Lloyd", "Homework": [90.0, 97.0, 75.0, 92.0], "Quizzes": [88.0, 40.0, 94.0], "tests": [75.0, 90.0]}alice= { "name":"Alice", "Homework": [100.0, 92.0, 98.0, 100.0], "Quizzes": [82.0, 83.0, 91.0], "tests": [89.0, 97.0]}tyler= { "name":"Tyler", "Homework": [0.0, 87.0, 75.0, 22.0], "Quizzes": [0.0, 75.0, 78.0], "tests": [100.0, 100.0]}#Add your function below!#find the average of a listdefaverage (number): Total=sum

/* (program Head gaze starts)* Copyright and version Number Declaration section of the program* Copyright (c) 2011, Yantai University School of computer students* All rights reserved.* File name: Student Performance Management System* Author: Liujiangpo* Completed Date: June 23, 2012* Version number: v.623* Descriptive narrative of tasks and solutions* The gaze end of the program head*/#include "stdio.h" #include "string"/* Define

/* (program Head gaze starts)* Copyright and version Number Declaration section of the program* Copyright (c) 2011, Yantai University School of computer students* All rights reserved.* File name: Student Performance Management System* Author: Liujiangpo* Completed Date: June 23, 2012* Version number: v.623* Descriptive narrative of tasks and solutions* The gaze end of the program head*/#include "stdio.h" #include "string"/* Define

PHP, or hypertext preprocessor, is a program that is embedded in a Web page and executed by the server side. It has cross-platform, object-oriented and integrated with the database perfect features, for the vast number of web programmers favor.MySQL uses the structure of the associated database, which is a simplified and fast database management program. It provides management features that are used by many people and supports standard SQL syntax. It also has cross-platform capabilities as well

){Destroy ();}void Stumanaframe::onabout (Wxcommandevent event){wxstring msg = Wxbuildinfo (long_f);Wxmessagebox (msg, _ ("Welcome to ..."));}void Stumanaframe::onadd (Wxcommandevent event){Add student ' s dormitory infomationSqlite3 *db=null;int flag;Char *errmsg;Flag = Sqlite3_open ("./stuinfo.db", db);if (SQLITE_OK! = flag){Wxlogmessage ("Database connect failed!");Exit (-1);}Char id[20], name[20], dorid[20], phone[20], qq[20],sex[10];strcpy (ID, M

Code reuse in the 14th chapter of--c++ Classes that contain object members 14.1.1 Valarray IntroductionHeader filevalarraySupported Features: Adds the values of the elements used in the array Find operations such as maximum and minimum values Declaring an object with the Valarray classvalarray Code snippets that use constructorsvalarrayDesign of the 14.1.2students classtypedef std::valarray typedefthe role of join: In the future code can be used to repres

The web page used to query student information. the mysql database contains the student ID, name, ID card number, and class. How to enable the student to enter the ID card number to display other information about the student, ask for the p code, and mysql needs to set the primary key and other such mysqlphtml Th

1. The case of TreeMap (treemap2. Case code:(1)Student. Java:1 Packagecn.itcast_04;2 3 Public classStudent {4 PrivateString name;5 Private intAge ;6 7 PublicStudent () {8 Super();9 }Ten One PublicStudent (String name,intAge ) { A Super(); - This. Name =name; - This. Age =Age ; the } - - PublicString GetName () { - returnname; + } - + Public voidsetName (String name)

Title DescriptionWrite a function print that prints an array of students ' scores, with data for 5 students, each of which includes NUM (student number), name (name), Score[3] (3-course score). Write a function input that is used to enter data for 5 students.Input5 student's number, name, 3-course GradeOutput5 student's number, name, 3-course GradeSample input1001 Zhangsan 861002 Lisi, 801003 Wangwu, 891004 yanping, 1001005 Xiaoxiao 60 60 60Sample out

(Wuhan | student) self-guided tour of Lushan (figure) Statement: the trip to Lushan will take time from 2010.04.23 to 2010.04.25. Three days and two nights, we will take a weekend trip to add a Friday tour because our colleagues are working in the lab for boss. Click to download"Multi-ChartLushan self-help travel strategy" 2010.04.23Day 1 We bought the train from Wuchang to Jiujiang in T291 in the morning. It took about three hours. Soon, it was j

It has been about half a month since I started to knock on the student system, to the acceptance project, and to modify the Bug During the acceptance process. In the past half month, I received a large amount of goods. At the time of project acceptance, I was deeply touched by what Shi said. The system we did was not for ourselves, but for others. We wanted to serve the people. At first, I thought everything would be okay if I had knocked on the syste

The specific controls and key attributes required by the Student management system: 1. Login Form Basic controls: Label (Label control) Main properties: Image (images displayed on the label) Text (displayed on the label) TextBox (text box control) Main properties: PasswordChar (indicates the character that is displayed in the text box when it is the password box, not the text that is actually entered) button (buttons control) ComboBox (Dropdo

Using System; Using System.Collections.Generic; Using System.Text; Using System.Collections; namespace Studenmanager {struct Student {public int id; public string name: public int age; public string sex;} class M Anager {Student Stu = new Student (); ArrayList list = new ArrayList (); public void Menu () {Console.WriteLine ("1") Add

Enter each student's learning score, sorted by total scorestruct Student{public string name;public int age;public double Cshap;public double Database;public double Html;public double sum;}static void Main (string[] args){ Console.WriteLine ("Please enter the number of students:"); intA =Convert.ToInt32 (Console.ReadLine ()); ListNewList(); for(inti =0; i ) {Student s=NewStudent (); Console.WriteLine ("P