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CREATE TABLE cat( id INT NOT NULL PRIMARY KEY, title VARCHAR(100) NOT NULL, parent_id INT NULL ); INSERT INTO cat VALUE (1, 'Root1', NULL), (2, 'Root2', NULL), (3, 'Child1', 1), (4, 'Child2', 3), (5, 'Child3', 2); WITH RECURSIVE rcat(id, title, path) AS ( SELECT cat.id, cat.title, CAST(cat.id AS CHAR(200)) FROM cat WHERE parent_id IS NULL UNION ALL SELECT cat.id, cat.title, CONCAT(rcat.path, ',', cat.id) FROM cat JOIN rcat ON cat.parent_id=rcat.id ) SELECT * FROM rcat WHERE id=4;
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