SQL

recursion in sql

/*A recursive query is one that is defined by a Union All with an initialization
fullselect that seeds the recursion. The iterative fullselect contains a direct
reference to itself in the FROM clause. */

Read Here :
https://www.ibm.com/docs/en/i/7.4?topic=optimization-example

sql recursive query

WITH RECURSIVE cte_name AS (
    cte_query_definition (the anchor member)
 
    UNION ALL
 
    cte_query_definition (the recursive member)
)
 
 
SELECT *
FROM   cte_name;