I’ve been reading his blog for a while and getting consistently good value. I’d categorize it as a SQL blog with an emphasis on TSQL, and Alex always seems to find interesting exceptions that it’s good to know about. He also earns extra points for having a solution (a good one!) in a Celko book! Worth adding to your list of blogs.
I'm Andy Warren, currently a SQL Server trainer with End to End Training. Over the past few years I've been a developer, DBA, and IT Director. I was one of the original founders of SQLServerCentral.com and helped grow that community from zero to about 300k members before deciding to move on to other ventures.