Lots of talk about performance, but no numbers cited. I did my own benchmarks before using sequential ("COMB") GUIDs as 'PRIMARY KEY' (yes, they're surrogate ke

Lots of talk about performance, but no numbers cited. I did my own benchmarks before using sequential ("COMB") GUIDs as 'PRIMARY KEY' (yes, they're surrogate keys) and found no material performance difference. I didn't keep the results, but someone else has made their numbers public here: https://blogs.msdn.microsoft.com/sqlserverfaq/2010/05/27/guid-vs-int-debate/ https://blogs.msdn.microsoft.com/sqlserverfaq/2010/05/27/gui...