Aaron Bertrand continues his series on large table compression with results from row and page compression, and a process involving scheduler manipulation.
Paul White goes deep on grouped aggregation pushdown, and explains examples where this optimization is unsuccessful or simply not attempted, using the undocumented command DBCC CSINDEX.
Melissa Coates provides an overview of in-memory technologies in SQL Server, including columnstore indexes and memory-optimized tables, with an emphasis on columnstore indexes.