sql to txt file

para guardar una consulta en un txt, simplemente:

SELECT order_id,product_name,qty FROM orders
INTO OUTFILE '/tmp/orders.txt'

se pueden usar modificadores para alterar el comportamiento al guardar:

SELECT order_id,product_name,qty FROM orders
INTO OUTFILE '/tmp/orders.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'