Tim Radney talks about some of the typical SQL Server mishaps he comes across out in the wild, and resources you can use to avoid them in your own environments.
Glenn Berry provides some details about how compatibility levels and the cardinality estimator have changed over the years, and why modern versions of SQL Server continue to be the better option.
Jonathan Kehayias shares insight about new UDF information in showplan, and shows that only some tools will show it (SSMS 17+ & SentryOne Plan Explorer).
Paul White provides some great information about row goals, explaining why they're important to understand when examining why the query optimizer made a certain choice.
