This tripped me up a few weeks ago, but once I stopped and thought about for a moment it made total sense. I was trying to copy some data into a temp table and got an error I’d never encountered before. Column, parameter, or variable #1: Cannot find data type MyStringType. What’s that all about? Let’s find out. Why User-Defined Types? I’ve never been a fan of user-defined types (UDT). They definitely have applications, but there’s also a temptation to use them to “standar...