impala recursive

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Impala supports recursive queries using the WITH RECURSIVE syntax. This allows you to write SQL queries that recursively reference a table to perform hierarchical or graph-like operations. Here's an example of a recursive query in Impala: WITH RECURSIVE employee_hierarchy AS ( SELECT id, name, manager_id, 1 AS level FROM employees WHERE manager_id IS NULL UNION ALL SELECT e.id, e.name, e.manager_id, eh.level + 1 FROM employees e JOIN employee_hierarchy eh ON e.manager_id = eh.id SELECT id, name, level FROM employee_hierarchy ORDER BY level, name; In this example, we are selecting all employees and their hierarchical levels in a company. The first part of the query

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