Added id_from_vos_path() function. Performs much better than joining node_vos_path view

$func$ LANGUAGE sql;

SELECT update_array('{"group1","group2"}'::VARCHAR[],'{"group2","group3"}'::VARCHAR[],'{"group1"}'::VARCHAR[]) = '{"group2","group3"}' AS test_passed;

-- Returns node_id of a given vos_path. Setting cost to 1 tells the planner to always execute this function before other clauses (100 is the default function cost).

CREATE OR REPLACE FUNCTION id_from_vos_path(vos_path_input VARCHAR) RETURNS BIGINT IMMUTABLE COST 1 AS

$func$

WITH RECURSIVE r_vos_path AS (

    SELECT node_id, path, 1 AS level, STRING_TO_ARRAY(vos_path_input, '/') AS parts, (CASE WHEN vos_path_input = '/' THEN '/' ELSE '' END) AS vos_path

    FROM node

    WHERE name = ''

  UNION ALL

    SELECT n.node_id, n.path, p.level + 1, p.parts, p.vos_path || '/' || p.parts[p.level + 1]

    FROM node n

    JOIN r_vos_path p ON p.path = n.parent_path

    WHERE n.name = p.parts[p.level + 1]

)

SELECT node_id FROM r_vos_path WHERE vos_path = vos_path_input

$func$ LANGUAGE sql;