Recursion

Technical Article

Function and Queries to Convert Hierarchical Adjacency to Nested Json Arrays

  • Script

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. 

★ ★ ★ ★ ★ ★ ★ ★ ★ ★

You rated this post out of 5. Change rating

2019-11-24

968 reads

Technical Article

Function and Queries to Convert Hierarchical Adjacency to Nested Json Arrays

  • Script

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. 

★ ★ ★ ★ ★ ★ ★ ★ ★ ★

You rated this post out of 5. Change rating

2019-11-12 (first published: )

2,193 reads

Blogs

DiskANN Experiment — Exploring Entry Points and Graph Neighborhoods

By

Introduction I was experimenting with vector search in SQL Server 2025 using approximately 3.8...

T-SQL Tuesday #203: Risk and Reward

By

This is timely, as I’m currently on a boat in the Adriatic taking a...

dataMinds Connect 2026 – Slides & Scripts

By

You can find the slides and SQL scripts for my session “Spice up your...

Read the latest Blogs

Forums

Communication, For Incidents and Life

By Pat Wright

Comments posted to this topic are about the item Communication, For Incidents and Life

PostgreSQL psql Meta Commands: Tables

By Grant Fritchey

Comments posted to this topic are about the item PostgreSQL psql Meta Commands: Tables

Building a Support Ticket Triage Report with IIF() and CHOOSE() in SQL Server

By john.martin

Comments posted to this topic are about the item Building a Support Ticket Triage...

Visit the forum

Question of the Day

PostgreSQL psql Meta Commands: Tables

Which of the following psql meta commands (also called backslash or slash commands) will provide information about tables within a database?

See possible answers