An adventure on SQL Server performance and features


Row Level Security Performance Implications


A conversation had me wondering about performance implications in SQL Server RLS feature, specifically on how to mitigate the performance impact;TL; DR; ? Since security functions are actually Inline Table Valued Functions (ITVF), if you write them in a decent way the queries will run in the most efficent way possibile, avoiding RBAR processing. Let’s set the case scene; I’m starting...

Test: confronting various methods of bulk loading data from a table to another, what’s the fastest?


 Most of the support request I get involved with can be summarized with the following keywords: “slow” + “datawarehouse” + “ETL” + “Save us” What about thinking about ETL performance before it goes bad? Before the system is in production for some time , the data size reaches a decent size which wasn’t tested in DEV and you find out that the...

An adventure on SQL Server performance and features

Emanuele Meazzo

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