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Original table:1. A career change is to turn a column of data into a row display, and a column switch uses the sum aggregation function, and when the case is judged, the column change needs to define its own alias.Column Change statement:SELECT SUM (caseWhen t.loc = ' NEW YORK ' thenT.deptnoEND) as column_00001,SUM (caseWhen t.loc = ' DALLAS ' ThenT.deptnoEND) as column_00002,SUM (caseWhen t.loc = ' CHICAGO ' ThenT.deptnoEND) as column_00003,SUM (case

May 26, 2014 */package factory;import java.util.arraylist;/** * @author C.l.wang * */public abstract class Pizza {String name; String Dough; Raw dough string sauce; Sauce arraylist2. Detailed Product class (concrete products), detailed product customization method.Code:/** * @time May 26, 2014 */package factory;/** * @author C.l.wang * */public class Nystylecheesepizza extends Pizza {public Nystylecheesepizza () {name = "NY Style Sauce and Cheese Pizza";d ough = "Thin crust dough"; Sauce = "Mar

In Windows and Linux, MySQL restores database code in Linux: 1. create an empty database cddl Mysql> create database cddl; Query OK, 1 row affected (0.00 sec) 2. restore the database [Root @ chicago mysqlsoftware] # cd/etc/rc. d/init. d [Root @ chicago mysqlsoftware] # cd/etc/rc. d/init. d [Root @ chicago init. d] # mysql-h 192.168.92.100-uroot-p

Marshall Jafferson650) this.width=650; "src=" http://img2.kuwo.cn/star/starheads/300/4/82/3328532725.jpg "width=" "height=" 300 " Style= "border:0px;"/>It's not easy to stick around for more than 30 years on the road to music, but Marshall Jefferson did it, and today he's famous. Whoever asked, the American electronic musician has been the most influential open-circuit man in Chicago since the 80 's. So he was called the father of the chamber music.Hi

We recommend an ansic C tutorial.Applications Programming in ANSI CAnsi c ApplicationProgramDesignAuthour Richard johnsonbaugh (US)Martin Kalin (US)Translator Yang Ji-WenLu QiangTsinghua University PressISBN: 7-302-12150-8/tp.7838$78.00 C language is efficient, flexible, and elegant. It is still a required basic course for various software design and development personnel. This book introduces the C language in a step-by-step manner, and explains the design of applications with a large number

return the empty set. When you use When using > and >=, only >=1 returns full table data, others return only the empty set. RowNum for queries that are larger than a value, the rownum>2 is not documented because RowNum is a pseudo column that always starts with 1, and Oracle believes that the condition of rownum> N (the natural number of n>1) is still not tenable, So I can't find the records. Less than or less equal: bys@ Bys3>select * from dept where rownum DEPTNO dname LOC ---------- -

Historically, Oracle's import and export capabilities have used disk files as storage intermediaries for unloading and reloading databases. The way to "swap files" for larger databases is a big problem. Because a large file will exceed the operating system's limit on file size, the export cannot be implemented. Some innovative data administrators use file compression, such as the compression feature in Unix, to obtain the maximum size of a swap file. The import and export features in later vers

EMP (EMPNO, ename, JOB, MGR, HireDate, SAL, COMM, DEPTNO, DESC2)VALUES (7902, ' FORD ', ' ANALYST ', 7566, to_date (' 03-12-1981 ', ' dd-mm-yyyy '), 3000.00, NULL, and NULL);INSERT INTO EMP (EMPNO, ename, JOB, MGR, HireDate, SAL, COMM, DEPTNO, DESC2)VALUES (7934, ' MILLER ', ' clerk ', 7782, to_date (' 23-01-1982 ', ' dd-mm-yyyy '), 1300.00, NULL, ten, NULL);INSERT INTO EMP (EMPNO, ename, JOB, MGR, HireDate, SAL, COMM, DEPTNO, DESC2)VALUES (7935, ' KATE ', ' MANAGER ', NULL, NULL, NULL, NULL, N

sauce";Pizzalist.push_back ("grated Reggiano Cheese");}};Class Chicagostylecheesepizza:public Pizza{PublicChicagostylecheesepizza (){Name= "Chicago Style deep Dish Cheese Pizza";Dough= "Extra Thick crust Dough";sauce= "Plum Tomato sauce";Pizzalist.push_back ("shredded mozzarella Cheese");}void Cut (){cout}};Class Pizzastore{Public:Pizza Orderpizza (String type){Pizza Pizza;Pizza=creatpizza (type);Pizza.prepare ();Pizza.bake ();Pizza.cut ();Pizza.box

"; toppings.add("Grated Reggiano Cheese"); }}public class ChicagoStyleCheesePizza extends Pizza { public ChicagoStyleCheesePizza() { name = "Chicago Style Deep Dish Cheese Pizza"; dough = "Extra Thick Crust Dough"; sauce = "Plum Tomato Sauce"; toppings.add("Shredded Mozzarella Cheese"); } void cut() { System.out.println("Cutting the pizza into square slices"); }}How to call different batch SA p

MySQL restores the database code in Windows and Linux: 1. create an empty database cddlMysql> create database cddl;Query OK, 1 row affected (0.00 sec) 2. restore the database[Root @ chicago mysqlsoftware] # cd/etc/rc. d/init. d[Root @ chicago mysqlsoftware] # cd/etc/rc. d/init. d[Root @ chicago init. d] # mysql-h 192.168.92.100-uroot-ppassword cddl Warning: U

Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 Connected as scott SQL code SQL> select * from dept; deptno dname loc ------ ------------ ------------- 10 accounting new york 20 research dallas 30 sales chicago 40 operations boston SQL> create table dept2 as select * from dept; Table created www.2cto.com SQL> select * from dept; deptno dname loc ----------------------------- ---- 10 accounting new york 20 research dallas 30 sale

For LIKE fuzzy search, you can use the wildcard "%" and "_": %: to indicate any character, including zero; _: to indicate any character; SQL code Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 Connected as scott SQL> select * from dept; deptno dname loc ------ ------------ ------------- 10 accounting new york 20 research dallas 30 sales chicago 40 operations boston "%" and "_" Demo: SQL code SQL> select * from dept where DNAME

";$ This-> dough = "Thin Crust Dough ";$ This-> sauce = "Marinara Sauce ";$ This-> toppings [] = "Grated Reggiano papperoni ";}}Class Chicago stylecheesepizza extends Pizza {Public function _ construct (){$ This-> name = "Chicago Style Deep Dish Cheese Pizza ";$ This-> dough = "Extra Thick Crust Dough ";$ This-> sauce = "Plum Tomato Sauce ";$ This-> toppings [] = "Shredded Mozzarella Cheese ";}Public funct

Xiaosheng about his 70 s years old yesterday. I told him that I would give a speech today and asked him: 「 what do you want to talk about this question? 」 He said, "The only thing is that the five and six important books should be read several times .」 Because Mr. Lin was a student at the University of Chicago, he was also a student at the University of Chicago, An important part of their training is the i

. (2007 ). QoS-aware service composition in Dino . 5th IEEE European Conference on Web Services, ecows 07, November 26,200 7-November 28,200 7, Halle, Germany, Inst. of elec. And Elec. Eng. Computer Society. Cao, H. and H. Jin, et al. (2006). serviceflow: QoS Based Service Composition in cgsp . 10th IEEE International Enterprise Distributed Object Computing conference, edoc 2006, October 16,200 6-October 20,200 6, Hong Kong, China, Institute of Electrical and Electronics Engineers Inc.Wang, X. L