In this issue we shall be celebrating the arrival of PostgreSQL 8.4 by showcasing the new treats
that PostgreSQL 8.4 has to offer. Although 8.4 has some nice big ticket items like Windowing Functions which we
briefly covered numerous times and Common Table Expressions, it also has some small ticket items. These small ticket items
while small, are perhaps more useful than even the big ticket ones because they are more commonly used constructs.
In this article we shall introduce the new unnest() function which makes converting an array to a table like structure
not only easier, but much more efficient. We will also be covering the new enhancements to our favorite function the