Java实体类的属性类型与mysql数据库表字段类型对应表

-- 新增表结构
DROP TABLE IF EXISTS `servicnn`;
CREATE TABLE `servin` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `operation_unit` varchar(100) DEFAULT NULL COMMENT ‘运‘,
  `create_time` datetime DEFAULT NULL COMMENT ‘创间‘,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT=‘数‘;


--新增表字段
ALTER TABLE risly ADD `lintype` varchar(255) DEFAULT NULL COMMENT ‘类型‘;
ALTER TABLE pply ADD `lipe` varchar(255) DEFAULT NULL COMMENT ‘类型‘;

--删除表字段
ALTER TABLE risl_apply drop `lin_type`;
ALTER TABLE ripply drop `linype`;

--插入数据
INSERT INTO dblic(ste, ey, pde, me, cments, dea) VALUES ("ORKET", "5", "5", "核", "数阶段", 2);

--删除数据
DELETE FROM dublic WHERE ste = "KET" AND pky = "5";