In an effort to make leading wildcard searches sargable, Aaron Bertrand (@AaronBertrand) plays around with a trigram-type implementation in SQL Server.
Aaron Bertrand acknowledges that DISTINCT and GROUP BY are usually interchangeable, but shows there are cases where one performs better than the other.
Erin Stellato (@erinstellato) takes a look at the new COMPRESS and DECOMPRESS functions, comparing their impact on space and performance to traditional data compression.
