An adventure on SQL Server performance and features


A quick function to remove (or keep only) string patterns from SQL Server Strings


Working with strings in SQL Server isn’t as easy or powerful as using any programming language, but, I’m sure that more than once you had to to some data manipulation directly in the database, this may help you out, and it doesn’t use Loops, CLR or XML The idea is to exploit set logic, as opposed to the classic program logic of when you’re usually playing with strings in...

Tracking Dynamic SQL performance automatically with a wrapper on sp_executesql (Dynamic SQL Inception)


in some projects I have a lot of Dynamic SQL going on, some queries are fast, some queries are slow, it depends on how the dynamic statement is actually put together ¯\_(ツ)_/¯ Tracking the performance of such statements is usually difficult because you don’t really know “why it’s slow” and you have to interpolate data from the app and the plan cache (if the plan is still...

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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