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Label:Transferred from: http://www.cnblogs.com/lixiangfa/archive/2011/09/15/2178033.html Written back, Database Basics SummaryToday to a company written test, database test more, but to tell the truth, the test is also a relatively basic. Now while the memory is up, the database knowledge is simply organized as follows: First, the establishment of the table instructions For example, create a student table student, it consists of the number SNO, name sname, sex ssex, age

;> Res(0, '/root/python/day01 ')3) Pour into the import sys module[email protected] day01]# cat test1.pyImport SysPrint SYS.ARGVPrint Sys.argv[2][[email protected] day01]# python test1.py a b C[' test1.py ', ' A ', ' B ', ' C ']B9. User interaction1) raw_input[email protected] day01]# cat test2.py#!/usr/bin/env Ptyhon#_ *_ Coding:utf-8 _*_Name = raw_input(' Please input your name: ')Age = Raw_input (' Age: ')Print name, age[email protected] day01]# cat test2.py#!/usr/bin/env Ptyhon#_ *_ Coding:u

VALUES (' Dick ', ' math ', 92) INSERT into Student0 VALUES (' Dick ', ' physics ', NULL) SELECT * FROM Student0 Select [Name], IsNull (sum (case subject When ' language ' then result End), 0) as ' language ', IsNull (sum (case subject When ' math ' then result End), 0) as ' mathematics ', IsNull (sum (case subject When ' physical ' then result End), 0) as ' physics ' From Student0 Group BY [name] Copy Code code as follows: --The subquery makes a

= #sno # INSERT intoSTUDENT (sno,sname,ssex,sage,sdept)VALUES (#sno #, #sname #, #ssex #, #sage #, #sdept #)UPDATE STUDENTSET sname= #sname #,ssex= #ssex #,Sage= #sage #,sdept= #sdept #WHERE Sno = #sno #DELETE STUDENTWHERE Sno = #sno # 4, Appsqlconfig.java Package Com.study.xiaofeng;Import com.ibatis.sqlmap.client.Sql

you can never writeSelect S#,sname,sage,ssex from StudentEndGoThere are parameter stored procedures:Global variablesA global variable, also known as an external variable, is defined outside the function and is scoped to the end of the program file, starting at the definition of the variable.Select student information for the specified name: Create proc Stuproc@sname varchar (100)AsBeginSelect S#,sname,sage

Tags: sel cottage Learning-fuzzy query predicate student har IkeConnection queries: Design query join conditions or join predicates for two or more tables: The conditional general format used to connect two tables:[[Equivalent connections:The join operator is =Find out about each student and elective courseMysql> Select Student.*, sc.* from STUDENT,SC where student.sno=sc.sno;+-------+--------+------+------+-------+--- ----+-----+-------+| Sno | sname | Ssex |

Tags: original otherwise examples page full create int param injectionMapper.xml tips:Create a new file in the 1:mapper package: MYBATIS-3-MAPPER.DTD2: In Web App libraries/mybatis.jar/org.apache.ibatis.builder.xml/mybatis-3-mapper.dtd, open, copy content, Post to yourself new MYBATIS-3-MAPPER.DTD3: The path to the DTD on the Mapper.xml header is the current directory!4: Close the Stumapper.xml file and reopen it, there is a hint!#{} and ${} differences: ${} does not value, regardless of data ty

I do not know whether we remember in the "Journey to the" in the Lotus Hole in the story of the Treasure, is the Monkey King skillfully grabbed the treasures, the gold and Silver Kok King that chapter. What does this story give us? What is the connection between this story and effective Java? Or continue the style of the article, read the code, read the story. 1import static org.junit.assert.*;2import org.junit.Test;345public class Testclone {67 @Test8 public void Testclone () {9//west to learn

VIEWD:grant61. To revoke a table s that already exists in the database, available | | c| |.A:delete TABLE SB:delete SC:drop TABLE SD:drop S62. To add a list of CNAME (course name) in basic table S, available | | c| |.A:add TABLE S (CName CHAR (8))B:add TABLE S ALTER (CName CHAR (8))C:alter TABLE S ADD (CName CHAR (8))D:alter TABLE S (ADD CName CHAR (8))63, Student Relations mode Student (sno,sname,sex,age), the attributes of Student respectively indicate student's number, name, gender, age. To

Label:DESC AA;select * from BB;/* Add sgender column to AA table, at specified position */ALTER TABLE BB add SS int first;ALTER TABLE BB add SGe char (3) after Sage;/* Delete sgender column for AA table */ALTER TABLE AA drop Sgender;ALTER TABLE BB drop column SGE;/* Modify the name of the column */ALTER TABLE AA change sage age;/* Modify the data type of the column */ALTER TABLE BB Modify SID Int (20);ALTER

database. (2) set the score of all the students in the 01311 class to zero. (3) Delete Course Selection records for all students in the 2001-level computer software class. (4) The student LI Yong dropped out of school and deleted his records from the database. Iv. Content of the internship report 1. Write the SQL statement for the preceding operation.2. What are the essential differences between the DROP and DELETE commands? Run the Code: *********************** *//** Find the student informat

', 'nanjing ')GoInsert into SPJ values ('s1', 'p1', 'j1', 200)Insert into SPJ values ('s1', 'p1', 'j3', 100)Insert into SPJ values ('s1', 'p1', 'j4', 700)Insert into SPJ values ('s1', 'p2', 'j1', 100)Insert into SPJ values ('s2', 'p3', 'j1', 400)Insert into SPJ values ('s2', 'p3', 'j1', 200)Insert into SPJ values ('s2', 'p3', 'j4', 500)Insert into SPJ values ('s2', 'p3', 'j5', 400)Insert into SPJ values ('s2 ', 'p5', 'j1', 400)Insert into SPJ values ('s2 ', 'p5', 'j2 ', 100)Insert into SPJ valu

Thrift-xiaoshe's column-blog channel-csdn. net Thrift example Category: Thrift Read by 3164 Comment (2) Favorites Report I use C ++, so I will give a C ++ example to briefly introduce thrift's getting started. The example is described as follows: the student information (student ID, name, gender, age) is sent to the server by the client. To implement this example, we have to do the following: (1) write the. Thrift File (2) generate a CPP File (3) Com

Basic Database Operations, databasesI. Data Table Student (S #, Sname, Sage, Ssex) Student table S #: Student ID; Sname: Student name; Sage: Student age; Ssex: Student genderCourse (C #, Cname, T #) curriculum C #, Course No.; Cname: Course name; T #: Instructor No.SC (S #, C #, score) Student table S #: Student ID; C #, course number; score: scoreTeacher (T #, Tname) Instructor table T #: Instructor ID; Tn

be hard to be diligent and indifferent to words and deeds. 10. Abandon To the holy saying: to hear the truth, Xi can die. Yan ziyue: Shun and he, and give to others. Mencius said: The self-violence cannot talk with any other words. The self-destruction cannot do with the promise. Old ancestor said: I am not a saint, and I have learned it. Sun Zi said: Shiga smell Buddha half-baked and want to give up his body, Huang Di along the wind knee line and asked Guang chengzi governing body but can grow

level like a feudal system, the gods have evolved for a long time. However, in the Taoist culture, the combination of mythical and legends of the people and the ideas in the school has developed a perfect fairy level system. The evolution process is not my specialty, so I will skip the Development Section and draw a conclusion directly. Hey hey :)Taoism believes that there is a sequence of Tao building, and there are high and low levels of sin. Therefore, there are also different levels of tast

inside the object are serializable, otherwise, it is necessary to carefully examine whether those objects that are not serializable can be set to transient, thus excluding them from the replication process.Shallow cloning is obviously easier to implement than deep cloning because all classes in the Java language inherit a clone () method, and the Clone () method does a formal shallow clone.Some objects, such as thread objects or socket objects, cannot be simply copied or shared. Whether using s

Promote The eight commandments after a few months of "Monkey Search" website, for their upcoming web site from planning to technical applications have been already ready, just before the eight precepts will leave the mountain and mountain, Sun Dasan or give eight precepts to arrange the last class is also in the construction of a very important link-the site of publicity and promotion, Because the big sage according to own experience deep feeling: eve

1. Table structure--createtable Timetable Createtablet_course (cno varchar2 (), cnamevarchar2 (,) creatdatechar (Ten), updatedatechar ()) tablespaceusers pctfree10initrans1maxtrans255storage ( initial64Knext1Mminextents 1maxextentsunlimited);--createtable Student table create Tablet_student (NBSP;NBSP;SNONBSP;NBSP;NBSP;VARCHAR2), snamevarchar2 (,) sagenumber) tablespaceuserspctfree10initrans1 maxtrans255storage (initial64K next1mminextents1maxextentsunlimited);-- Createtable Student and Curricul

master code at column level create table Student (Sno char (9 ) PRIMARY key , Sname char (20 ) not null , Ssex char (2 ), Sage smallint , sdept char (20 )"); (2) define the main code create table Student (Sno char (9 ), Sname char (20 ) not Span class= "Hljs-keyword" >null , Ssex char (2 ), Sage smallint , sdept char (20 ), primary KEY ［例2］将SC表中的Sno，Cno属性组定义为码 CREATE TABLE