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OPENJSON Performance and Schemas

Dave Mason has a new blog theme and a post on OPENJSON performance:

Support for JSON data has been around in SQL Server for a while now, starting with SQL 2016. The OPENJSON rowset function is the built-in function that allows you to natively convert JSON text into a set of rows and columns. There are two options for using OPENJSON: with the default schema or with an explicit schema. There are performance implications for each, which I’ll review with some examples.

Dave has some nice tips for people working with JSON data in SQL Server.