Is your SQL drawing a blank? It’s NULL a surprise! The title of this post is a play on words, but very appropriate. We are going to discuss the inconsistent results, as well as performance ...

This document outlines a performance benchmark on selecting all values from a larger table, joined by a smaller table, where no joined values exists. In other words, an inverted INNER JOIN clause. It ...

For example, comparing NULL to any value, including another NULL, always returns unknown, not true or false. Secondly, you must grasp the impact of NULL on various SQL operations. Comparisons ...

Online experimentation framework (Mechanical Turk oriented) - chbrown/formious ...

These are typically SQL database applications. So many developers who learned on document databases or other NoSQL databases now need to know SQL. Get started!