empty query resutl in mysql with working query codes

[tough]

select name, REPLACE(format, ' – ', '/') as format, CAST(price AS UNSIGNED INTEGER) as price, CONCAT('http://www.example.com/',url_key) as url, id, delivery, sku from Database1 where delivery <> 'finished' INTO OUTFILE 'test.txt' FIELDS TERMINATED BY '\t';

this query returns empty result while

select name, REPLACE(format, ' – ', '/') as format, CAST(price AS UNSIGNED INTEGER) as price, CONCAT('http://www.example.com/',url_key) as url, id, delivery, sku from Database1 where delivery <> 'finished';

returns with results,
I am a new to databases and developement so need help.