WordPress database error: [Got error 28 from storage engine]
SHOW COLUMNS FROM wp_users LIKE 'knr_author_order'

WordPress database error: [Duplicate column name 'knr_author_order']
ALTER TABLE wp_users ADD `knr_author_order` INT( 4 ) NULL DEFAULT '0'

WordPress database error: [Got error 28 from storage engine]
SELECT t.*, tt.*, tr.object_id FROM wp_terms AS t INNER JOIN wp_term_taxonomy AS tt ON tt.term_id = t.term_id INNER JOIN wp_term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ('category', 'post_tag', 'post_format') AND tr.object_id IN (6239, 6310, 7588, 8999, 11819, 13742, 15620, 16322, 16796, 17187, 18000, 18301, 19654, 19815, 29534) ORDER BY t.name ASC