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Sql UNION

The SQL UNION operator combines the results of two or more queries and makes a result set which includes fetched rows from the participating queries in the UNION.

XML Fundamentals

xml stands for Extensible Markup Language. A markup language uses a set of additional items called markups to create a document of hierarchical structure.

CSS3 border radius to create rounded corners

With CSS3 you may create rounded corners with border radius property. And this helps you to get rid of the hassles of creating rounded corners with images and lots of divs.

CSS3 translucent colors with RGBA and HSLA

With CSS3, you may use RGBA and HSLA to create translucent colors. This is an example of how you may do that.

PostgreSQL String Functions and Operators - Part-III

In this page we have discussed last 10 more important string functions with syntax and examples.

Twitter Bootstrap ScrollSpy tutorial

In this document you will see how to use Twitter Bootstarp ScrollSpy Plugin to automatically update nav targets based on scroll position.

PostgreSQL String Functions and Operators - Part-II

Another 10 PostgreSQL string functions have discussed with syntax and example in this page.

Create full screen view with screenfull.js

Want to create a Full Screen View of your image or video? W3c provides a Fullscreen API for that, and screenfull.js is a “Simple wrapper for cross-browser usage of the JavaScript Fullscreen API”.

PostgreSQL String Functions and Operators - Part-I

The PostgreSQL string functions can be used for manipulating and examining various type of queries independently or within a table.

PostgreSQL Trigonometric Functions

The PostgreSQL trigonometric functions accept the input values as radians and returns the corresponding values against this function.

PostgreSQL Mathematical Functions

A mathematical function operates on input values ( numeric ) which are provided as arguments, and return a numeric value as the output of that operation. Mathematical functions operates on numeric data.

PostgreSQL Mathematical Operators

PostgreSQL provided many Mathematical operators for common mathematical conventions. The bitwise operators can be used only with the integer data types.

PostgreSQL Comparison Operators

Comparison operators, as their name, allows to compare two values. It Compares strings or numbers for relationships such as equality.

SQL JOIN Cheat Sheet by w3resource

When you need to fetch data from two or more tables based on relationship between you need to use SQL JOIN. w3resource.com has a comprehensive SQL Tutorial and we have covered SQL JOIN in great detail. But we felt that creating a cheat sheet on SQL JOIN will be very useful for you.

Create excellent line chart with Highcharts.js

Charts and graphs are often required to express data. There are plenty of tools available to create online graphs and charts. Here we have created a line chart using HighChart JavaScript Library. The chart shows browser usage of w3resource.com for the last financial year.

Convert number to word with PHP

How many times you required a code to convert numbers into words? Here is a PHP code to do exactly that.

HTML5 based Form validation without JavaScript

For client side form validation, using JavaScript is inevitable. But not any more. With HTML5, now you may validate your forms at client side without using any JavaScript.

JavaScript pie chart with gRaphaël

gRaphaël (Raphaël graphics library) is a JavaScript library to create graphs and charts. The following example renders an animated pie chart showing browser usages. gRaphaël currently supports Chrome 14+, Firefox 3.0+, Safari 3.0+, Opera 9.5+ and Internet Explorer 6.0+.

Creating JavaScript Date format in PHP style

datetime.min.js a JavaScript Library offers various ways to create Date Formats. The following example shows how to create a variety of JavaScript date formats in PHP style with date() function.

Creating Unique ID’s with PHP uniqid() function

PHP offers various ways to create Unique ID number. Here is an example where we use uniqid() function to create unique ids. md5() and sha1() functions are also used with uniqid() to get more sophisticated ids.

Creating Date format in PHP

PHP offers various ways to create Date Formats. Here is an example which shows how to create Date Formats with PHP date() Function.

PostgreSQL Logical Operators

The AND, OR, and NOT keywords are PostgreSQL's Boolean operators. These keywords are mostly used to join or invert conditions in a SQL statement, specifically in the WHERE clause and the HAVING clause.

PostgreSQL HAVING

The HAVING clause is used to specify which individual group(s) are to be displayed, that is , the desire groups that you return on the basis of aggregate functions.

Twitter Bootstrap Icons

All Icon images are bundlled into one and used with background-position CSS property. The image file is glyphicons-halflings.png and it resides under img folder of the main Twitter Bootstrap folder.

PostgreSQL GRUOP BY

The group by clause is used to divide the rows in a table into smaller groups that have the same values in the specified columns. This clause is used with SELECT statement to combine a group of rows based on the values or a particular column or expression.

PostgreSQL MIN function

The MIN function determines the smallest of all selected values of a column.

PostgreSQL AVG function

The AVG function determines the average of all selected values of a column.

PostgreSQL MAX function

The PostgreSQL MAX function returns the maximum value, specified by expression in a set of aggregated rows.

Twitter Bootstrap Modals Tutorial

Twitter Bootstrap Modal are created using a custom Jquery Plugin. It may be used to create modal windows to enrich user experience or to add functionality to users. You may use popover and tooltips within Modals.

PostgreSQL SUM function

The SUM function in PostgreSQL returns the sum of values for the list of selected columns.

PostgreSQL COUNT function

The PostgreSQL COUNT function counts number of rows or non-NULL values against a specific column from a table.

PostgreSQL AGGREGATE functions

An aggregate function produced a single result for an entire group or table.

PostgreSQL ALTER TABLE

The PostgreSQL ALTER TABLE statement is used to change the definition or structure of an existing table.

Twitter Bootstrap Popover Tutorial

In this document you will see how to use Twitter Bootstarp Popover out of the box and also how to customize it using several options available.

PostgreSQL FOREIGN KEY constraint

A FOREIGN KEY constraint contain the value in a column or combination of columns which must be appearing in the same column or group of columns in another table.

PostgreSQL PRIMARY KEY CONSTRAINT

The PostgreSQL PRIMARY KEY is a column in a table which must contain a unique value which can be used to identify each and every row of a table uniquely. So it can be said that the PRIMARY KEY of a table is a combination of NOT NULL and UNIQUE constraint.

PostgreSQL UNIQUE CONSTRAINT

The PostgreSQL UNIQUE constraint ensures that the uniqueness of the values entered into a column or a field of a table.

PostgreSQL NOT NULL

The not-null constraint in PostgreSQL ensure that a column can not contain any null value. This is a column constraint. No name can be defined to create a not-null constraint.

PostgreSQL Constraint

Constraints are a part of the table definition that limit the values inserted into its columns.Which type of data a table can store that may be decided by the type of data. That is why CONSTRAINTS needed. Suppose the age of a student is always be a positive value but there is no such data type which can accept only positive value, a CONSTRAINT can do this.

PostgreSQL Check Constraint

The PostgreSQL CHECK constraint controls the value of a column(s) being inserted.The PostgreSQL provides the CHECK constraint, which allows the user to define a condition, that a value entered into a table, has to satisfy, before it can be accepted. The CHECK constraint consists of the keyword CHECK followed by parenthesized conditions. The attempt will be rejected when update or insert column values that will make the condition false.

PostgreSQL DISTINCT Clause

The PostgreSQL DISTINCT clause is used with SELECT statement to suppress duplicate values if any in a column. After execute a select statement the resultant table returns all rows according to the provided expression. If it is required to eleminate the duplicate rows from the resultant table the DISTINCT clause in PostgreSQL can be used.

PostgreSQL ORDER BY

A query, after executed by PostgrerSQL select statement can optionally be sorted. Sometime for better inspection it is required to comes rows in a sorted order. PostgreSQL ORDER BY will do the job of sorting rows in a manner as specified by user in the expression.

PostgreSQL SELECT

PostgreSQL SELECT statement retrieves data from a single table or multiple tables or views (a virtual table).

PostgreSQL WHERE

The PostgreSQL WHERE clause is used to control a PostgreSQL SELECT query, i.e. records or rows can be fetched according to an expression or some conditions supplied by the user.

HTML5 header element

Purpose of the header element is to hold any of the h1 to h6 elements, a hggroup element, a table of content, a search form or associated logos.

HTML5 content categories

Every HTML5 Element comes under zero or more categories depending upon the kind of content it holds. This document discusses those categories.

HTML5 Figcaption Tag Tutorial

In this page we have discussed Description, Usage, Attributes, Example, Result and Compatibility of HTML5 figcaption tag / element.

Browsers Statistics

In this page we have presented Browsers Statistics graphically. This will help you to understand the percentage of usage of different browsers.

Twitter Bootstrap with Less CSS

Less is a CSS preprocessor which makes CSS dynamic. Twitter Bootstrap on the other hand, is a toolkit to develop web apps and sites fast. In this document we have discussed about using Twitter Bootstrap with Less CSS. This way you can use Less variables, mixins, and nesting of Bootstrap in CSS.

PostgreSQL DELETE

This document discusses how to delete data of a table using PostgreSQL DELETE command.

PostgreSQL UPDATE

This document discusses how to update data of a table using PostgreSQL UPDATE command. We have also covered how to do the same using PHP-PostgreSQL.

PostgreSQL INSERT

This document discusses how to insert data into a table using PostgreSQL INSERT command. We have also covered how to do the same using PHP-PostgreSQL.KJVQCSV69JFX

JSON Example

This document provides you with some JSON Example. Examples are associated with XML, MySQL, MongoDB and APIs to add more value. Instead of just writing the JSON code as examples, we thought that it would be of more value to you if we co-relate the examples with those.

HTML5 footer tag

This document discusses HTML5 footer tag - Description, Usage, Attributes, Example, Result and browser Compatibility.

webP - a new image format

This document discuses webP, a new image format which can reduce the image size up to 28% and 35% respectively when compared to a PNG and JPEG image.

PostgreSQL Create Table

This document discusses how to create table in PostgreSQL using command line, pgAdmin III and phppgAdmin. For ease of understanding, each process is complemented by screenshots taken while doing.

PostgreSQL Create Database

This document discusses how to create database in PostgreSQL using command line, pgAdmin III and phppgAdmin. For ease of understanding, each process is complemented by screenshots taken while doing.

Schema.org Recipe Type Tutorial

In this document we have discussed the Recipe type of the Schema.org. This tutorial covers description, properties, example and output of the example using Google Rich Snippets tool.

PostgreSQL Data Types

This document discusses PostgreSQL Data Types. While creating table, for each column, you specify a data type, i.e. what kind of data you want to store.

Install PostgreSQL on Linux and Windows

This document discusses detail installation process of PostgreSQL on Linux and Windows. For demonstration purpose, we have used Ubuntu Linux and Windows 7.

PostgreSQL tutorial - overview and what you will learn

This document gives you an overview of PostgreSQL and lists what you will learn in the following documents of w3resource PostgreSQL tutorial.

C Basic

The characters that can be used to from words, numbers, and expressions depend upon the computer on which the program is run.

Compile and execute C program in Linux and Windows

In this document we will see how we can compile and execute C program in Linux and Windows.The document also contains a list of C compilers available.

C Tutorial

C tutorial from w3resource covering the features of C language, hundreds of examples and output, pictorial representation and explaination of program, pictorial representation and explaination of data flow.

C programming

In this page we will write a small piece of code using C programming language and look into the structure of that C program with explanation and pictorial presentation.

PostgreSQL with php - a thorough introduction

This tutorial will get you started with PostgreSQL with PHP. You will learn to create a simple web application with PostgreSQL and PHP using wapp. As you know, PostgreSQL is one of the most popular and robust opensource Relational Database Management System and PHP is perhaps the most popular opensource Server Side programming language for developing web applications.

Schema.org Book type tutorial

In this page we have discussed the Book type of the Schema.org. This tutorial covers description, properties, example and output of the example using Google Rich Snippets tool.

HTML5 Figure Element Tutorial

In this page we have discussed Description, Usage, Attributes, Example and Result, Compatibility of HTML5 figure element.

MongoDB count() cursor method

In this page we are going to discuss the usage of count function in mongodb. The count() function returns the number of documents in a specified collection.

HTML5 Details tag and Element Tutorial

In this page we have discussed Description, Usage, Attributes, Example and Result, Compatibility of HTML5 details element.

MongoDB conditional operator - $type

In this page we are going to discuss about the conditional operator $type. The $type operator is used to retrieve the matching results from the collection based on BSON type.

HTML5 Canvas Element Tutorial

In this page we have discussed Description, Usage, Attributes, Example and Result, Compatibility of HTML5 canvas element.

HTML datalist element tutorial

In this page we have discussed Description, Usage, Attributes, Example and Result, Browser Compatibility of HTML5 datalist element.

HTML tags you will not use anymore

With the rise of HTML5, there are certain HTML tags, which have become aobsolete. Not surprising, if you are in web design or devlopment, you have to update yourself often. So, in this tutorial we you will unlearn certain HTML tags which have become obsolete and you will learn what is better alternative for those obsolete tags.

Google Plus API Tutorial

Google Plus API for developers allows you to fetch public data form Google+. In this tutorial w3resource discusses an overview of Google Plus API, followed by detail tutorial of all the necessary steps one need to perform to successfully fetch public data from Google+.

MongoDB conditional operator - $size

In this page we are going to discuss about the conditional operator $size. The $size operator is used to retrieve those documents from the collection to match an array with the provided number of elements in it. The $size operator can not be used to find a range of sizes.

JSONP tutorial

In this page We will discuss JSONP, i.e. JSON with padding. JSONP is used to request data from a server residing in a different domain. But why do we need a special technique to access data from a different domain? It's because of the Same Origin Policy.

Schema.org WebPage Type tutorial

In this page we have discussed WebPage type of Schema.org in detail.

MongoDB conditional operator - $or and $nor

In this page we are going to discuss about the conditional operator $or and $nor. The $or operator is used to search multiple expression in a single query with only one matching criterion to be needed in a document. More than one keys and values can be used with the $or operator. The $nor operator is used to search multiple expression in a single query which does not match any of the values specified with the $nor.

MongoDB conditional operator - $in and $nin

In this page we are going to discuss about the conditional operator $in and $nin.

HTML5 DOCTYPE

DOCTYPE is the first thing which should be present in an HTML5 document.

Introduction to node.js

This is a Node.js Tutorial from w3resource. You will learn About What Node.js is, History, Features,How to install Node in Windows and in Linux, Followed by a comprehensive discussion of each of the modules of Node.js API. By the end of this Tutorial, you will be able to develop and deploy Node.js Applications by yourself.

Installing Node.js on Windows and Linux

Installing Node.js on Windows and Linux.

Schema.org MusicRecording Type tutorial

In this page we have discussed MusicRecording type of Schema.org in detail.

MongoDB conditional operator - $ne

In this page we are going to discuss about the conditional operator $ne (not equals). The $ne (not equals) operator is used to retrieve every document from a collection except for the specific ones that match certain criteria.

CSS Text Align

text-align property aligns the text in a particular direction. This property aligns the text, which is stacks of line boxes to the left or right of the inline box.teria.

Schema.org MusicPlaylist Type tutorial

In this page we have discussed MusicPlaylist type of Schema.org in detail.

MongoDB conditional operator - $mod

The $mod operator is used to help the user to retrieve documents from a collection for a specific field that consist an even or odd number. This can be done easily because the $mod operator calculate the remainder and checks whether it is 0 or not. It works like 'where' clause of Sql.

MongoDB conditional operator - $exists

The FULL OUTER JOIN will return all rows, as long as there's matching data in one of the tables. It includes all the rows from both the participating tables and does not select either the LEFT or RIGHT table from the JOIN key word.

Twitter Bootstrap Alerts and Errors tutorial

In this tutorial, you will learn how to create Alerts and Errors using Twitter Bootstrap toolkit.

Twitter Bootstrap Modals, tooltips and popovers tutorial

In this tutorial, you will learn how to create Modals, tooltips and popovers using Twitter Bootstrap toolkit.

Schema.org Movie Type tutorial

In this page we have discussed Movie type of Schema.org in detail.

Twitter Bootstrap Tables tutorial

In this tutorial, you will learn how to use Twitter Bootstrap toolkit to create Tables.

Twitter Bootstrap Forms tutorial

In this tutorial, you will learn how to use Twitter Bootstrap toolkit to create Forms (controls and buttons).

Twitter Bootstrap Navigation tutorial

In this tutorial, you will learn how to use Twitter Bootstrap toolkit to create Navigations.

Twitter Bootstrap tutorial

Twitter Bootstrap is a toolkit to develop web apps and sites fast. It includes basic CSS and HTML for creating Grids, Layouts, Typography, Tables, Forms, Navigation, Alerts, Popovers etc.

Twitter Bootstrap Grid System tutorial

In this tutorial, you will learn how to use Twitter Bootstrap toolkit to create a Grid System.

Twitter Bootstrap Layout tutorial

In this tutorial, you will learn how to use Twitter Bootstrap toolkit to create Fixed as well as Liquid Layouts.

Twitter Bootstrap Typography tutorial

In this tutorial, you will learn how to use Twitter Bootstrap toolkit to create headings, paragraphs, lists and other inline elements.