Hive Recursive Queries Explained

In Hive, hierarchical queries can be achieved using recursive queries or the WITH RECURSIVE keyword. Recursive query is a self-referencing type of query that iteratively computes results based on its own output until a stop condition is met. It allows for querying all hierarchical relationships of a node, including its children, parents, or all levels of hierarchy. The WITH RECURSIVE keyword is used to specify the recursive query statement for hierarchical querying.