I’mma be honest with you, dear reader: this query exercise stems from a client problem that I couldn’t figure out how to solve in the time constraints that I had, and it drove me crazy. I wanted to put hours into this to figure it out, and I was sure there’d be a fun T-SQL way to do it.
I was onsite at a client helping them design a database, and part of the database involved storing routes for stations. For the purposes of this blog post, say we’ve got a station for each letter of the alphabet:
DROP TABLE