1. 错误提示
12:25:51 CREATE TABLE user ( id BIGINT(20) NOT NULL COMMENT ‘主键ID’, name VARCHAR(30) NULL DEFAULT NULL COMMENT ‘姓名’, age INT(11) NULL DEFAULT NULL COMMENT ‘年龄’, email VARCHAR(50) NULL DEFAULT NULL COMMENT ‘邮箱’, PRIMARY KEY (id) ) Error Code: 1046. No database selected Select the default DB to be used by double-clicking its name in the SCHEMAS list in the sidebar. 0.000 sec
2.解决办法
选择数据库，然后再执行创建表的语句
