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4. Conditional SelectionUPDATE.
For example, the following update conditions are available:
For employees with a salary of more than 5000, the salary is reduced by 10%.
Employees with salaries between 2000 and 4600 increase by 15%
You can easily choose to execute two UPDATE statements, as shown below:
-- Condition 1
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->UPDATE PersonnelSET salary
Introduction
A topic is used to define visual styles for Web pages. A Topic consists of a series of elements: skins, CSS, images, and other resources. The subject can be applied to programs, pages, or server controls.
You can create a topic by adding the app_themes folder to the solution. You can also add the skin file to achieve the goal.
Application topicApply a topic on a pageA topic is a property of the page class. We can set it in different ways. Once a topic is set, all the controls on th
I,
CSS
1,
CSS (name)
Access the style attribute of the First Matching Element.
Return Value String
Parameters
Name (string): name of the attribute to be accessed
Example:
$ ("P" ).css ("color"); // obtain the value of the Color Style attribute of the first section.
2,
CSS (properties)
Set a "name/value pair" object to the style attribute of all matching elements. This is the best way to set a large number of style attributes on all matching elements.
Return Value Jquery
Parameters
Problem origin:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Yesterday, I was asked by my colleagues about the difference between the shallow copy and the deep copy. To be honest, I remember reading the concepts and differences when I was at school.
However, at that time, there were several other students who could read and understand the books as much as possible.
Although Clone-related content is
ArticleDirectory
Section 1
Section 4
Section 5
Prelude
T just graduated from college this year. It is very difficult to find a job when I graduate because I did not study hard at school. Fortunately, at ordinary times, the C language class helped girls write their homework and accumulated some experience, so they finally found a writeProgram. On the first day of work, he receives a task, adds a command bar to a plug-in of Word 2003, and adds a command bar button to it. The u
different values. For most junior programmers, this is a confusing concept.
To change the scope of a variable within a function, you can use the global statement.
Copy Code code as follows:
Code highlighting produced by Actipro Codehighlighter (freeware) http://www.CodeHighlighter.com/-->function function_name () {
Global $var;
}
$var = 20;
Function_name (); Function call.
?>
In this example, the $var inside the funct
Python is a process control that relies on tab tabs and line breaks.Programming LanguageSo you must note that its white space characters areCode.
I. Condition Selection statement
1. If statement
Code
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> If X Y: Print " X " Elif X = Y: Print " X = y " Else : Print " X> Y " Elif is short for else if. Each judgme
1. Keep the position of the scroll bar after callback
In ASP. net1.1, it is very painful to keep the position of the scroll bar after callback, especially when there is a grid in the page and you want to edit a Specific Row. The page is reloaded and must be rolled down at the top of the page to keep the page unchanged. In asp2.0, you only need to simply add the maintainscrollpostiononpostback attribute to the page attribute:
Code highlighting produced by Actipro CodeHighlighter (
What we want to talk about today is that the client accesses WebService-serialization and deserialization.
I heard serialization in ASP. NET AJAX for the first time.
====================================== Demo1 ==================== ==========
Demo1 demonstrates using JSON characters on the client.
Add reference first
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->
Code highlighting produced by Actip
1: Brief Introduction
MongoDB is a distributed document database that supports a master-slave structure similar to a relational database. It stores documents in binary Json format, without locks, transactions, and indexes.
2: Installation Steps
Step 1: Download the Assembly http://www.mongodb.org/downloads
Part 2: extract and extract the relevant bin directory to C: \ Mongo (this option is optional), and create a db folder under this directory.
Part 3: Open the CMD window, go to the C: \ Mongo \
1. Introduction to anonymous methodsThe anonymous method allows us to write the method in an "inline" way.CodeThe code is directly associated with the delegated instance, which makes the task of delegated instantiation more intuitive and convenient.
2. Questions about the anonymous method:
2.1 parameter listThe anonymous method can be followed by a parameter list (you can leave it unspecified) by the delegate keyword. The following code blocks can access these parameters:Addbutton. Click + =
the possibility of conflict.
Add a custom request suffix to fix the httphanlder bug in. JS/. CSS that Asp.net cannot capture in some IIS sites.
Modified some of the original bugs, such as monitoring file changes.
Function demonstration
1. differentiate multiple languages for automatic loading of relevant JS and JS variable resources First look at the entire file organizationThere are several logical judgment points. 1. When webform1.aspx is requested, it will automatically deter
Action and filter
In Asp.net MVC, filter can only be restricted to action and controller. It inherits from actionfilterattribute and can overwrite the following important methods.1: void onactionexecuting (actionexecutingcontext): action before execution
2: void onactionexecuted (actionexecutedcontext): The operation after the action is executed.
3: void onresultexecuting (resultexecutingcontext): executed before parsing actionresult
4: void onresultexecuted (resultexecutedcontext): Afte
the plug-in and use this interface standard to manage all the later plug-ins. Here, the main program and plug-ins are implemented through a standard DLL export function, mainly used to create plug-in objects in the main program:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Bool plug_createobject (void ** pobj)
{
* Pobj = new cpluga;
Return * pobj! = NULL;
}
The class cpluga is derived from the base
CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Class Song@ Plays = 0 Def Initialize (name, artist, duration)@ Name = Name@ Artist = Artist@ Duration = Duration@ Plays = 0End Def Play@ Plays + = 1 # Same as @ plays = @ plays + 1 @ Plays + = 1 " This song: # @ plays. Total # @ plays. " EndEnd
For debugging purposes, I specifically return a string containing the number of times the song was played and
CodeBlock and iterator
This section briefly introduces one of Ruby's features. What we will learn is code blocks: Some codes that can be associated with methods to call them together, just like the parameters of methods.
This is an incredible powerful feature. One of our critics commented on this feature as follows: "This is really interesting and important. If you haven't noticed it before,
Now you have to pay attention to it ." We all agree with him.
You can use code blocks to implemen
I just read the article about oracle efficient design. When it comes to Standard Quantum queries in oracle, the performance depends on associated queries, however, I know in SQL server that the performance of associated queries is better than that of scalar queries.
Let's test the performance by executing the statement:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Set autotrace on
Select a. username
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