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Tutorials by ONLamp.com

You can find here all the 80 tutorials by ONLamp.com. The author's home page URL is http://www.onlamp.com.
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In the last column, John Paul Ashenfelter showed you how to use inner joins and cross joins. This week he tackles outer joins.
March 19, 2008 Today Views: 1 Total Views: 177

More on JOINS

Author: ONLamp.com  Rating:
The exploration into JOIN statements continues with a look at INNER JOIN, the most commonly used SQL join.
March 17, 2008 Today Views: 1 Total Views: 194

Self-Inflicted SQL

Author: ONLamp.com  Rating:
This week, John Paul Ashenfelter looks at the "self-join," a tool that is particularly useful in certain situations, such as when you have a normalized database table that needs to be flattened.
March 14, 2008 Today Views: 2 Total Views: 209

SQL Subqueries

Author: ONLamp.com  Rating:
Subqueries are extremely useful in web-based database applications where you need to combine two queries and manually put them together to achieve a desired result. Subqueries allow SQL to do all of the heavy lifting!
March 12, 2008 Today Views: 3 Total Views: 229

Introducing SQL Sets

Author: ONLamp.com  Rating:
Because SQL is based on relational algebra, it should come as no surprise that the standard contains several set-oriented operators. In that spirit, it's time we take a look at the UNION operator.
March 11, 2008 Today Views: 1 Total Views: 191
GUI-based database management tools are great, but it's also important to understand the broad strokes of directly manipulating database structure. In this week's aboutSQL, John Paul Ashenfelter describes how to use SQL to define the database, its component tables, and other artifacts.
March 7, 2008 Today Views: 2 Total Views: 243

Working With Tables

Author: ONLamp.com  Rating:
In the last aboutSQL column, John Paul Ashenfelter introduced the Data Definition Language (DDL) and how to create database containers. This week, he moves on to creating tables and populating them with data.
March 6, 2008 Today Views: 1 Total Views: 273

SQL Data Types

Author: ONLamp.com  Rating:
Most database products support ANSI-SQL for manipulating data, but there is far more variance in the details of how DDL is implemented. John Paul Ashenfelter discusses data types for different SQL platforms.
March 5, 2008 Today Views: 2 Total Views: 265
Here are eight tips for enhancing Web database applications by using PHP and MySQL.
March 3, 2008 Today Views: 1 Total Views: 280
George Reese, coauthor of Managing & Using MySQL, 2nd Edition, offers a set of best practices for MySQL administrators that will help with the security, maintenance, and performance of a MySQL installation.
February 28, 2008 Today Views: 1 Total Views: 212
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