Converting JSON to table in SQL Server 2016
I found a Microsoft page that actually solves the problem.
Here is how the query should look like:
SELECT * FROM OPENJSON(@_l_Table_Data) WITH ( Formal_Round_Method NVARCHAR(16) '$.Formal_Round_Method' , Public_Round_Method NVARCHAR(16) '$.Public_Round_Method' , Formal_Precision INT '$.Formal_Precision' , Public_Precision INT '$.Public_Precision' , Formal_Significant_Digits INT '$.Formal_Significant_Digits' , Public_Significant_Digits INT '$.Public_Significant_Digits' , General_Comment NVARCHAR(MAX) '$.General_Comment' AS JSON ) ;So, you need to add AS JSON at the end of the column definition and (God knows why) the type MUST be NVARCHAR(MAX).
Very simple indeed!!!