This script converts hierarchical adjacency into nested json rows which contain the recursive "downlines" of each node. The table-valued function treats each row in the original adjacency as the root node in a recursive common table expression.
2019-11-12 (first published: 2019-11-08)
Learn how to generate lists of column values from multiple rows by grouping and using a recursive CTE. This is a very flexible and easy implementation, compared to using cursors or PIVOT operators.
2015-06-26 (first published: 2013-07-09)