This query is marked as a draft This query has been published by Ahecht.

SQL

AخA
 
SELECT CASE CHARINDEX('_', page_title, 1)
     WHEN 0 THEN page_title -- empty or single word
     ELSE SUBSTRING_INDEX(page_title, "_", 1) -- multi-word
END
FROM page
WHERE page_is_redirect = 0
LIMIT 20;
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