I have an instance of SQL Server running Microsoft SQL Server 2017 (RTM-CU31) (KB5016884) - 14.0.3456.2 (X64)
In one database, if I use JSON functions I get the following error:
Invalid object name 'OPENJSON'
But in another database on the same instance, I can use JSON functions with no problem.
I guess there's some setting that allows JSON functions?