Insert multiple level JSON data into SQL Server 2016 -
Now Native JSON support in SQL Server 2016 and it provides you some functions to read and parse your JSON object to table format.
1. The OPENJSON () table value function transforms JSON objects into one or many rows. It will not execute any command. It just returns a table row if JSON text is properly formatted. OPENJSON function will also work with JSON arrays and this function can also open nested/hierarchical JSON objects. OPENJSON will just return a set of rows instead of a single row.
2. The JSON_Value () is a scalar function used to returns a value from JSON on the specified path.
There are some specific examples for OPENJSON read nested JSON