Rob Farley (@rob_farley) looks at information exposed in query plans about residual predicates and actual rows read, showing how Plan Explorer helps identify the issue.
Jonathan Kehayias (@SQLPoolBoy) takes a closer look at a new trace flag that allows you to process multiple concurrent statistics updates on the same table.
With additional tests comparing splitting techniques to TVPs, Aaron Bertrand (@AaronBertrand) rounds out his series on STRING_SPLIT() in SQL Server 2016.
Tim Radney (@tradney) of SQLskills talks about the initial differences he has encountered while mastering the art of performance tuning Azure SQL Database.