Jovan Popovic shows how to use data in GeoJSON format.
First, building data in GeoJSON format from a spatial type:
In geometry object are placed type of the spatial data and coordinates. In “property” object can be placed various custom properties such as address line, town, postcode and other information that describe object. SQL Server stores spatial information as geometry or geography types, and also stores additional properties in standard table columns.
Since GeoJSON is JSON, it can be formatted using new FOR JSON clause in SQL Server.
In this example, we are going to format content of Person.Address table that has spatial column SpatialLocation in GeoJSON format using FOR JSON clause.
Then, converting GeoJSON to Geography types:
New OPENJSON function in SQL Server 2016 enables you to parse and load GeoJSON text into SQL Server spatial types.
In this example, I will load GeoJSON text that contains a set of bike share locations in Washington DC. GeoJSON sample is provided ESRI and it can be found in https://github.com/Esri/geojson-layer-js/blob/master/data/dc-bike-share.json
Check them out.