This is followed up a blog post of my earlier blog post on the same subject – Introduction to Hierarchical Query using a Recursive CTE – A Primer. In the article we discussed various basic terminology of the CTE. The article further covers following important concepts of common table expression. Let us learn in this video how to do Hierarchical Query using a Recursive CTE.
What is a Common Table Expression (CTE)
Building a Recursive CTE
Identify the Anchor and Recursive Query
Add the Anchor and Recursive query to a CTE
Add an expression to track hierarchical level
Add a self-referencing INNER JOIN statement