prnt sc

Label:SceneI use the database is mysql5.6, the following simple introduction of the next scenario Curriculum Create Table Course ( intPRIMARYKEY, varchar( ) ) Data 100 articleStudent table: Create Table Student ( intPRIMARYKEY, varchar( ) ) Data 70,000 articleStudent Score Table SC CREATE Table SC ( intPRIMARYKEY, int, int , int ) Data 70w BarPurpose of Enquiry:Find candidates wi

--about the primary foreign key exercises--adding and removing primary and foreign key syntax--deleting FOREIGN KEY syntax: ALTER TABLE name DROP constraint foreign KEY constraint name--Add foreign KEY syntax: ALTER TABLE NAME-constraint foreign KEY constraint name Forei GN key (column name) references Reference foreign key table (column name)--Delete primary KEY syntax: ALTER TABLE name DROP constraint PRIMARY KEY constraint name--Add PRIMARY KEY syntax: ALTER TABLE name ADD constraint PRIMARY

Database Query example and SQL statement [SQL] drop database if exists SS; create database SS; www.2cto.com use SS; create table Student (Sno char (9) primary key, sname char (20) unique, Ssex char (2), Sage smallint, Sdept char (20); create table Course (Cno char (4) primary key, cname char (40), Cpno char (4) references Course (Cno), Ccredit smallint); www.2cto.com create table SC (Sno char (9) references Student (Sno), Cno c Har (4) references Cour

-n 3 >nul Echo------------------------------------- echo----is opening the system firewall please ...---- Echo------------------------------------- sc config sharedaccess start= Auto net start sharedaccess Echo------------------------ Echo----System Firewall is open---- Echo------------------------ @ping 127.0.0.1-n 3 >nul Echo---------------------------- echo----shutting down the shared Print service---- Echo----------------------------

into stu_couse values (stu_couse_seq.nextval,1,3);INSERT into stu_couse values (stu_couse_seq.nextval,1,5);INSERT into stu_couse values (stu_couse_seq.nextval,1,5);INSERT into stu_couse values (stu_couse_seq.nextval,2,1);CommitSELECT * from Stu_couse;SELECT * from course;--select s.stu_name,sc.couse_id, c.couser_name from students S,course C,stu_couse SC where stu_id=1--select couse_id from Stu_couse where stu_id=1Select Cl.classname,s.stu_name,c.cou

, Degree descending query score all records of the table.SELECT * FROM Score ORDER by Cno Asc,degree DESCLINQ: (Here CNO ASC in LINQ to be written on the outermost)from S in ScoresS.degree DescendingS.cno AscendingSelect SLambda:Scores.orderbydescending (s = s.degree). (s = = S.cno)9. Check the number of students in "95031" class.Select COUNT (*) from student where class = ' 95031 'Linq:(from S in Studentswhere S.class = = "95031"Select S). Count ()Lambda:Students.where (s = = S.class = = "95031

StudentsS.class DescendingSelect SLambda:Students.orderbydescending (s = s.class)8, in CNO Ascending, Degree descending query score all records of the table.SELECT * FROM Score ORDER by Cno Asc,degree DESCLINQ: (Here CNO ASC in LINQ to be written on the outermost)from S in ScoresS.degree DescendingS.cno AscendingSelect SLambda:Scores.orderbydescending (s = s.degree). (s = = S.cno) 9. Check the number of students in "95031" class.Select COUNT (*) from student where class = ' 95031 'Linq:(from S

(NULL, 'wu', 18, 'male', 'harbin ', totimestamp (getdate ())) Insert into student (s #, name, age, sex, address, reg_time)VALUES (NULL, 'luo', 20, 'female ', 'harbin', totimestamp (getdate ())) Insert into student (s #, name, age, sex, address, reg_time)VALUES (NULL, 'zhou', 20, 'female ', 'harbin', totimestamp (getdate ())) Create table course(C # INT AUTO_INCREMENT not null,Cname CHAR (15 ),Teacher CHAR (15 ),Primary key (c #)) Insert into course (C #, cname, teacher) values (null, 'database'

When the database is troubleshooting according to regulations, you need to view each of the 50 tables in the database to ensure that all fields that are expected to be the default value are assigned the default value. It can be imagined that this is a daunting task. Is there a better way to view this schema than opening every table in the SQL server administration suite?By querying three system tables in any database, you can obtain the default values of each field in each table. The following i

);}/*** execute the currently registered function */public void execute(registry.this.client.exe cute (this. function);} public JCO. function getFunction () {return function;} public void setFunction (JCO. function) {this. function = function ;}} Here we start to prepare the test class Test the inserted RFC function. The Code is as follows: Import com. sap. mw. jco. JCO; public class CallInsert {public static void main (String [] args) {SapConn SC