One of the new Extended Event available in SQL Server 2022 is the query_antipattern. This extended event allows to identify anti-patterns on the SQL queries sent to the server. An anti-pattern in this case is some code that the SQL Server optimizer can’t do a great job optimizing the code (but cannot correct the issue automatically).
This is a very interesting possibility: Including this event in a session allow us to identify potential problems in applications. We can do this in development environments to the the problems earlier in the SDLC (Software Development Life Cycle). Let’s replicate some examples and check how this works.
Dennes shows two examples and notes that there are five total listed in the Extended Event, but that the documentation is a bit lacking to explain their intent.