MySQL复合语句用法
update和select联用, 将advid=2记录的数据同步更新到advid=14
update advertisement A
inner join advertisement B
set A.title = B.title,
A.targets = B.targets,
A.parameters= B.parameters,
A.code = B.code
where A.advid=14 and B.advid=2
insert和select联用, 将advid=4记录的数据拷贝出来，定义type字段为xxx，作为新纪录插入
INSERT INTO advertisement (available, type,displayorder, title, targets,parameters, code,starttime,endtime)
SELECT available, "xxxx" as "type",displayorder, title, targets,parameters, code,starttime,endtime
FROM advertisement
WHERE advid = 4
mysql拷贝root用户，改名，并修改允许登录为%
INSERT INTO user (
Host, User, Select_priv...