A Database Error Occurred
Error Number: 1054
Unknown column 'p2.parent_id' in 'on clause'
SELECT p2.* FROM (pages p1) JOIN pages p2 ON p2.parent_id = p1.id WHERE `p1`.`slug` = 'pdf' AND `p2`.`slug` = '190322.pdf' LIMIT 1
Error Number: 1054
Unknown column 'p2.parent_id' in 'on clause'
SELECT p2.* FROM (pages p1) JOIN pages p2 ON p2.parent_id = p1.id WHERE `p1`.`slug` = 'pdf' AND `p2`.`slug` = '190322.pdf' LIMIT 1