mysql encoding Chinese character recognition - please answer thank you, mysql Incorrect String value error

mysql coded Chinese character recognition mysql looking for mysql master mysql my ini

CREATE FUNCTION f1() RETURNS VARCHAR(30)
RETURN DATA_FORMAT(NOW(),'%Y year %m month %d day %H point: %i point: %s seconds');
select f1();
Then the Incorrect String value error appears

Reply content:

Detailed explanation of MySQL FUNCTION usage http://www.data.5helpyou.com/article322.html