Massive improvement of sp_BenchmarkTSQL stored procedure
Massive improvement of sp_BenchmarkTSQL stored procedure

 - Change date time format on DATETIME2(7) to increase benchmark calculation
 - Add @durationAccuracy parameter
 - Improve accuracy of duration calculation
 - Add BenchmarkTSQLID IDENTITY column to results table
 - Fix issue with arithmetic overflow, change INT to BIGINT data type

ktaranov/sqlserver-kit,AlexTitenko/sqlserver-kit,ktaranov/sqlserver-kit,AlexTitenko/sqlserver-kit,ktaranov/sqlserver-kit