I have to design a SQL query on an Oracle 10 DB. I want to do it in an elegant way and avoid, if possible, using sub-queries and in the most portable way possible. Basically it's query involving 3 ...

Self taught (and poorly at that) on SQL and I ran into something I cannot figure out if it is possible. I need to query CI with a child account to get the parent, then query CI with the parent to get ...

Writing SQL for performance can also avoid having to respond to an urgent problem with performance in a production environment. To a considerable extent, a person can choose whether they are running ...

Normalized data giving you problems? Learn how to use the SQL subselect statement and handle your database like a pro! Do you ever find yourself juggling queries to get the information you need?