Bad query: (select * from Hadith2 where collectionId=-1 and concat(',', REPLACE( NarratorLink,';',',') ,',') LIKE '%,,%' ) UNION (SELECT * FROM Hadith3 where collectionId=-1 and concat(',', REPLACE( NarratorLink,';',',') ,',') LIKE '%,,%' ) UNION (SELECT * FROM riyad where collectionId=-1 and concat(',', REPLACE( NarratorLink,';',',') ,',') LIKE '%,,%' ) order by
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