This is just a reminder that on Sunday, I’ll be teaching a live, 4-hour introductory course on databases and SQL. If you haven’t ever worked with databases before, then this will give you the push that you need to understand how they work, and how to work effectively with them. ...
Have you heard? Data is “the new oil” — meaning, data is the most valuable and important thing in the modern world. Which means that if you can store, retrieve, and organize your data, then you (and your company) are positioned for greater success. This usually means working with a ...
Announcing: My new book, “Practice Makes Regexp,” with 50 exercises meant to help you learn and master regular expressions. With explanations and code in Python, Ruby, JavaScript, and PostgreSQL. I spend most of my time nowadays going to high-tech companies and training programmers in new languages and techniques. Actually, many ...
After months of writing, editing, and procrastinating, my new ebook, “Practice Makes Regexp” is almost ready. The book (similar to my earlier ebook, “Practice Makes Python“) contains 50 exercises to improve your fluency with regular expressions (“regexps”), with solutions in Python, Ruby, JavaScript, and PostgreSQL. When I tell people this, ...
I recently helped a client with serious PostgreSQL problems. Their database is part of an application that configures and monitors large networks; each individual network node reports its status to the database every five minutes. The client was having problems with one table in particular, containing about 25,000 rows — ...
I was recently performing an analysis on the database for my dissertation software, and wanted to look at one particular set of rows. The table I was looking at is called Nodes, and because each node (represented by a row in the table) can optionally belong to a group, the ...