empty query - Quarry

SQL

/*
SELECT COUNT(*) FROM revision_userindex
JOIN actor_revision ON actor_id = rev_actor
JOIN comment_revision ON comment_id = rev_comment_id
WHERE actor_name = 'MatSuBot' AND comment_text LIKE '%missing labels%'
#AND rev_timestamp BETWEEN '20200713' AND '20200718' 24632
#AND rev_timestamp BETWEEN '20200706' AND '20200711' 55919
#AND rev_timestamp BETWEEN '20200629' AND '20200704' 63166
#AND rev_timestamp BETWEEN '20200622' AND '20200626' 50006
#AND rev_timestamp BETWEEN '20200615' AND '20200619' 43826
#AND rev_timestamp BETWEEN '20200608' AND '20200612' 62733
#AND rev_timestamp BETWEEN '20200601' AND '20200605' 17827
#AND rev_timestamp BETWEEN '20200525' AND '20200529' 26238
#AND rev_timestamp BETWEEN '20200518' AND '20200522' 32090
#AND rev_timestamp BETWEEN '20200511' AND '20200515' 1364
AND rev_timestamp >= '2020';
*/
/*
SELECT wbc_entity_usage.*, page_id, page_latest, ar_namespace, ar_title,
	(SELECT MAX(log_timestamp) FROM logging
     WHERE ar_namespace IS NOT NULL AND ar_title IS NOT NULL
     AND log_namespace = ar_namespace AND log_title = ar_title AND log_type = 'delete' AND log_action = 'delete') AS last_entry
FROM wbc_entity_usage
LEFT JOIN page ON page_id = eu_page_id
LEFT JOIN archive ON ar_page_id = eu_page_id AND ar_parent_id = 0
WHERE page_id IS NULL;

SELECT wbc_entity_usage.*, page_namespace, page_title FROM wbc_entity_usage
LEFT JOIN page ON page_id = eu_page_id
WHERE eu_aspect = 'X';
*/
SELECT P1.* FROM page AS P1, page AS P2
WHERE P1.page_namespace = 0 AND P1.page_title LIKE '%\_(%'
AND P2.page_namespace = 0 AND P2.page_title LIKE '%\_(%'
AND P1.page_title <> P2.page_title
AND SUBSTRING_INDEX(P1.page_title, '_(', 1) = SUBSTRING_INDEX(P1.page_title, '_(', 1)
AND NOT EXISTS (SELECT 1 FROM page AS P3 WHERE P3.page_namespace = 0 AND P3.page_title = SUBSTRING_INDEX(P1.page_title, '_(', 1))
SQL

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