Tutorials by ONLamp.com
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
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The exploration into JOIN statements continues with a look at INNER JOIN, the most commonly used SQL join.
March 17,
2008
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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
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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
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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
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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
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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
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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
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265
Here are eight tips for enhancing Web database applications by using PHP and MySQL.
March 3,
2008
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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
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