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The WHERE clause is one of the most important and powerful cluses within SQL. It gives a webmaster the ability to dictate the data returned from an SQL query.
AND & OR
By using the AND / OR clauses within your SQL queries it is possible to build complex and practical WHERE based queries.
Take a look at the simplest form of SQL statement, the SELECT statement. Very usefull and very simple this statement will form the basis of most of your SQL queries.
An Introduction To SQL
Introduction to SQL starting from first principles and building from there, here you will find a brief but concise introduction to the world of SQL. Including a breif look at the different types of databases which support SQL
Using Attribute Selectors
Learn how to use the CSS attribute selector to style your web pages. Any Element which possess an attribute can be referenced within your CSS code using attribute selectors.
Using Pseudo Selectors
Pseudo selectors add a great deal of versatility to you CSS code without the need for inline HTML referencing. Adding special effects and conditioning to your pages makes all the difference to presentation.
Using Adjacent Selectors
Learn how to use the CSS adjacent sibling selector to syle your web pages, elements which appear next one another are known as adjacent elements and you can use these references within your CSS code.
Anchor Text And Hyperlinks
One of the greatest features of the HTML document is the facility to interlink documents between each other using links and anchor texts, this tutorial will teach you the basic underlying concepts. Once complete you should have a good knowledge of how and when to use links and/or anchor text.
Using The Child Selector
Often you will want to style elements only under certain situations like when they occur within other elements, the child selector is one way to acheive this kind of control over your CSS selectors.
Using Descendant Selectors
Learn how to use the CSS descendant selector to syle your web pages, elements which appear within other elements are known as descendant elements and you can use these references for your CSS code.