MySQL simple permission management

Create database

CREATE DATABASE IF NOT EXISTS `wangcai` CHARACTER SET 'utf8mb4' COLLATE 'utf8mb4_general_ci';

Create user wangcai111, password 123456
CREATE USER `wangcai111`@`%` IDENTIFIED BY '123456';

Authorized user wangcai111 to wangcai All tables in this library have all permissions
GRANT ALL ON wangcai.* TO 'wangcai111'@'%';

Take back wangcai111 user wangcai Of all tables under the library select jurisdiction
REVOKE Select ON wangcai.* FROM 'wangcai111'@'%';