Almost two months have passed since my last blog post. And while it’s true that I’ve had (much) longer breaks, I do have a good reason now. All the time that I would normally at least in part spend on preparing new blog posts is now reserved for preparing presentations for a few upcoming events. I’ll give you an overview – who knows, maybe you’ll ...

On December 31 of last year, I posted this brain teaser, promising to post the answer “in a few days”. Apparently, 15 is a few J.   In case you have forgotten what the puzzle was about and are too lazy to click the link above, the bottom line is that I created and populated two tables, with the same schema but different content. One held ...

Here’s a nice brain teaser, just before the end of the year. Despite the title, it is related to SQL Server, not to music!   A common misconception amongst SQL Server users is that a clustered index on a table will ensure that data is returned in the order implied by that index. I have lost count of the number of times I had to disprove ...