mysql -h localhost -u root -p123 
mysql -h 172.16.xx.xx -P 3306 -u root -p 

CREATE TABLE `device_label` (
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键-自增长ID',
`origin_model` varchar(64) COLLATE utf8_bin NOT NULL COMMENT '收集机型',
`origin_vendor` varchar(64) COLLATE utf8_bin NOT NULL COMMENT '收集厂商',
`vendor` varchar(32) COLLATE utf8_bin NOT NULL COMMENT '标注厂商',
`model` varchar(32) COLLATE utf8_bin NOT NULL COMMENT '标注品牌',
PRIMARY KEY (`id`),
UNIQUE KEY `device_key` (`origin_model`,`origin_vendor`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='设备标注表'; 
改（ALTER）

alter table device_label modify origin_model varchar(32);
alter table device_label change origin_model device_model varchar(16); 

alter table device_label add os_type varchar(8) COLLATE utf8_bin NOT NULL COMMENT '操作系统' after id; 

alter table device_label modify os_type varchar(8) after origin_model; 

alter table device_label drop primary key, add primary key (`origin_model`,`origin_vendor`); 

CREATE USER 'hive'@'localhost' IDENTIFIED BY 'mypass';
GRANT ALL ON db1.* TO 'hive'@'localhost';
-- 可简写为
GRANT ALL ON db1.* TO 'hive'@'localhost' IDENTIFIED BY 'mypass'; 

GRANT SELECT ON db2.invoice TO 'hive'@'localhost'; 

insert into device_label (origin_model, origin_vendor, vendor, model)
values (
'h9', 'bbk', '步步高', 'H9'
); 

insert into device_label_copy (`origin_model`, `origin_vendor`, `vendor`, `model`)
select `origin_model`, `origin_vendor`, `vendor`, `model`
from device_label; 

load data local infile 'dvc-label.csv'
into table device_label
fields terminated by ','
ignore 1 lines
(origin_model, origin_vendor, vendor, model); 

update device_label 
set origin_model = 't2', origin_vendor = 'xiami'
where vendor = '锤子'; 

delete from device_label where origin_vendor = 'alps'; 

select vendor, count(distinct model) as models
from device_label
group by vendor
having models > 10