show grants for db_risk;
drop user 'db_risk'@'%';
CREATE user 'db_risk'@'%' IDENTIFIED by 'risk';
GRANT SELECT, INSERT, UPDATE, DELETE, EXECUTE, CREATE ROUTINE, ALTER ROUTINE, TRIGGER ON `ys_mosquito`.* TO 'db_mosquito'@'192.168.0.%'
flush PRIVILEGES;
alter user 'manage'@'%' IDENTIFIED by 'wvk9d7NTfknlAcqMv7cz';
grant all on *.* to 'test_1'@'localhost' identified by '123456';
SET PASSWORD FOR 'test_1'@'localhost' = PASSWORD('123456789');