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Union and UNION ALL Select Deptno from empUnionSelect Deptno from dept;Equivalent to the two result sets, union removes the duplicate, union all retains the duplicate2. IntersectSelect Deptno from empIntersectSelect Deptno from dept;This corresponds to the intersection of two results.3. MinusSelect Deptno from DeptMinusSelect Deptno from EMP;This is different from the above two, the first first used dept, the second is the EMP, this means to take out the results of dept, if the EMP also has

------------------------------------- Ten ACCOUNTING NEW YORK DALLAS SALES CHICAGO OPERATIONS BOSTON 2. Shell script calls Rman script #首先编辑RMAN脚本 [Email protected]:~> more RMAN.RCV RUN { CONFIGURE RETENTION POLICY to RECOVERY windows of 7 days; CONFIGURE BACKUP optimization on; CONFIGURE Controlfile autobackup on; CONFIGURE controlfile autobackup FORMAT for DEVICE TYPE DISK to '/users/oracle/bak/%d_%f '; ALLOCATE CHA

Tags: mysql5.6 data sheetLet's take a look at the data structures of several tables of Scott users in Oracle:==============================================================The following operations are performed in the Oracle database (if required)==============================================================To create a table:CREATE TABLE Dept (deptno INT PRIMARY key,dname varchar, loc VARCHAR (13)); CREATE TABLE EMP (EMPNO int (4) PRIMARY KEY, ename varchar (ten), JOB VARCHAR (9), MGR INT (4), Hi

");$result =array_intersect ($a 1, $a 2);Print_r ($result);echo "/*** Array_key_exists ()-Determine if the array key name exists*/function function: Determine whether the specified key name or index exists in the array, only one-dimensional array is applicable.$a =array ("Volvo" = "XC90", "BMW" and "X5");if (array_key_exists ("BMW", $a)) {echo "Key exists! ";} else {echo "key does not exist! ";}echo "/*** Array_merge ()-Merging arrays*/function functi

For ... In declares a loop/iterate operation for an array or an object's properties.1. For an array, iterate over the array element, and for the object, iterate over the object's attributes;var xvar mycars = new Array ()Mycars[0] = "Saab"MYCARS[1] = "Volvo"MYCARS[2] = "BMW"for (x in Mycars){document.write (Mycars[x] + "}The output is:SaabVolvoBMW2. Examples of objects:var obj = {W: "Wen",J: "Jian",B: "Bao"}for (var v in obj) {document.write (v) + "}Th

automatically declared as a global variable.This statement:Carname= "Volvo";A global variable is declared carname, even if it executes within the function.JavaScript operatorsoperator = is used to assign a value.operator + is used to add values.operator = Used to assign a value to a JavaScript variable.The arithmetic operator + is used to add up the value.y=5;z=2;After the above statement is executed, the value of X is 7.JavaScript arithmetic operato

code.GrammarBreak LabelName;Continue labelname;Continue statements (with or without label references) can only be used in loops.The break statement (without a label reference) can only be used in loops or switch.With a label reference, the break statement can be used to jump out of any JAVASCRIPT code block:Instancecars=["BMW", "Volvo", "Saab", "Ford";List{document.write (Cars[0] + "document.write (Cars[1] + "document.write (cars[2] + "Break list;doc

will return a value, and let the function end.function myFunction () { var x=5; return x;}The above function returns the value 5.Example:function MyFunction (b) { return A *b;} document.getElementById ("Demo"). innerhtml= MyFunction (4,3);The InnerHTML of the "demo" element will be: 12You can also use the return statement only if you want to exit the function. The return value is optional:function MyFunction (b) { if (a>b) { return; } x=a+B}If a is greater than B, t

can use local variables with the same name in different functions, because only the function that declares the variable can recognize the variable.As soon as the function is complete, the local variable is deleted.1.4 Global JavaScript variablesVariables declared outside of a function are global variables, and all scripts and functions on a Web page can access it.Lifetime of 1.5JavaScript variablesThe lifetime of JavaScript variables begins at the time they are declared.Local variables are dele

-collar workers, ordinary workers, jobless, high-end business people, etc. Age → Youth (18-30), middle-aged (30-45), middle age (45-60) Region → South, north To draw a relatively accurate consumer group. 3. Analyze the buyer's appeal and consider the selling point Analysis of the different people's consumption psychology, people's needs are different levels, these levels are only met at the bottom level, there will be a higher level of demand, they ar

to the development of Internet applications, but after reading the book, it becomes very clear.1.6 PHP EverywhereUbiquitous is the passionate word that is often used, by July 1999, there will be about 600,000 of Web sites using php,1999 Summer's big development of Linux and open code campaigns is likely to make a breakthrough for the PHP community. You can see its development trend chart on the HTTP://WWW.PHP.NET/USAGE.PHP3 site.In addition, the PHP mailing list receives approximately 80 emails

. Let's see how it works: Console.time (' Timer1 ');var items = [];for (var i = 0; i Items.push ({index:i});}Console.timeend (' Timer1 '); Run produces a result: 6. Get the stack trace information for the function With the JavaScript framework, a lot of code is introduced. Create the view and trigger the event, and finally you want to know the procedure for the function call. Since JavaScript is not a very structured language, it is sometimes difficult to know when something is going on. You ca

Title: There is a table in the system Wcemploy (employee number, name, department name, job, salary)I. Please write out the statement of the building form1 CREATE TABLE Wcemploy (2 int auto_increment PRIMARY KEY, 3 Char (8null,4 Char (+), 5 Char (8), 6 Double 7 )Two. Inserting data1 Insert intoWcemployValues(NULL,'Zhang San','Workshop One','Fitter',6000)2 Insert intoWcemployValues(NULL,'John Doe','Workshop One','Electrician',8000)3 Insert intoWcemployValues(NULL,'Harry','W

, ' Skoda ', 9000);INSERT into Cars VALUES (4, ' Volvo ', 29000);INSERT into Cars VALUES (5, ' Bentley ', 350000);INSERT into Cars VALUES (6, ' Citroen ', 21000);INSERT into Cars VALUES (7, ' Hummer ', 41400);INSERT into Cars VALUES (8, ' Volkswagen ', 21600);COMMIT;BEGIN TRANSACTION;CREATE TABLE Orders (Id integer PRIMARY KEY, orderprice integer CHECK (orderprice>0),Customer text);INSERT into Orders (Orderprice, Customer) VALUES ("Williamson");INSERT

', ' Billie ', ' Billy ', ' Blair ', ' Blake ', ' Bo ', ' Bobbie ', ' Bobby ', ' Brandy ', ' Brett ', ' Britt ', ' Brook ', ' Brooke ', ' Brooks ', ' Bryn ', ' Cal ', ' Cam ', ' Cammy ', ' Carey ', ' Carlie ' ', ' Carlin ', ' Carmine ', ' Carroll ', ' Cary ', ' Caryl ', ', ' Casey ', ' Cass ', ' Cat ', ' Cecil ', ' Chad ', ' Chris ', ' Chrissy ', ' Christian ', ' Christie ', ' Christy ', ' Clair ', ' Claire ', ' ClIs ', ' Claude ', ' Clem ', ' Clemmie ', ' "Cody ', ' Connie '", ' Constantine

, the combination of bankruptcy, from the industry disappeared. 02, Time Warner-AOL When the acquisition of others, AOL did not think that they will have this day. Of course this is not a takeover, just a merger. Six years ago, the two giants were married, and six years later, rumors of a split and a sale are continuing. Obviously, the effect of the merger of two companies is not ideal, in addition to mismanagement, AOL is also due to the loss of network advertising revenue, Time Warner has been

-modules-php-lightweight PHP5 MVC Framew Ork (extension modules) Libkohana2-php-lightweight PHP5 MVC FRAMEWORKLIBKOHANA3.1-CORE-PHP-PHP5 Framework Core CLASSESL IBKOHANA3.1-PHP-PHP5 Framework METAPACKAGELIBKOHANA3.2-CORE-PHP-PHP5 Framework Core CLASSESLIBKOHANA3.2-PHP-PHP5 FRA Mework Metapackagelibow-php5-dallas 1-wire support:php5 bindingslibphp-jpgraph-object oriented graph library for PHP5 Libphp-jpgraph-examples-object oriented Graph library for P

WiFi location is a new application service after the iphone has been upgraded to 1.1.3, and after getting the machine, start experimenting with WiFi positioning. In Dallas, USA, the location button was pressed and rotated for about 2 seconds, and the street immediately flashed to the center of the screen. No wonder Jobs also said: "It's really cool", this function is really amazing.Previously used GSM positioning, the error can be large to several kil

Ggsci (JP) 4> start Mgr Manager started. Ggsci (JP) 5> info All Program Status Group Lag at chkpt time Since chkpt MANAGER RUNNING Ggsci (JP) 12> edit params Rep2 Ggsci (JP) 13> view params Rep2 Replicat REP2 UserID Ogg,password ogg Assumetargetdefs Reperror Default,discard Discardfile./dirrpt/rep1.dsc,append,megabytes 50 Dynamicresolution --map Ogg.test,target ogg.test; Map scott.*, Target scott.*; Ggsci (JP) 9> dblogin userid Ogg,password ogg; Successfully logged into database. Ggsc

Buy a minimum model 512M OpenVZ VPS in just 5.05 dollars. Unlike in the previous months, their Los Angeles engine room speed has returned to normal, telecommunications average ping about 180. In addition, their home also has Miami, Chicago and other rooms can be selected. Busrt previously also introduced in detail, specific you can search the site before the introduction, here is not detailed, directly to the discount code, the need for students to grasp the start. Discount Code: Summerend Di