SQL Server 2017 Developer's Guide

The EDGE_ID_FROM_PARTS function

Finally, the EDGE_ID_FROM_PARTS function is analogous to the NODE_ID_FROM_PARTS function and constructs the edge_id from a given object_id and graph_id, as shown in the following code:

SELECT EDGE_ID_FROM_PARTS(OBJECT_ID('dbo.Follows'), 1);

It returns the JSON value that corresponds to the value in the first row in the dbo.Follows edge table, as shown in the following code:

-----------------------------------------------------------{"type":"edge","schema":"dbo","table":"Follows","id":1}