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mysql: sql insert into values (插入datetime类型)

insert into tweets values('2017-03-02 15:22:22');insert into tweets values('2017-03-02 16:34');insert into tweets values('2017-03-02');//末尾秒,分,时,可以依次省略,但日,月,年不可以省略...

2020-02-26 11:27:53

mysql建立表格的语句

create table Score(name varchar(50) not null,classid int(12) not null,quiz int(12),exam int(12),hw int(12),t1 datetime,t2 datetime,t3 datetime ) comment = '成绩表';...

2020-02-26 10:58:26

SQL语句更改字段名

不能直接修改。如果有数据,建议按下面方法执行  --变通:先建一个新的符号要求的字段,然后把老字段的值复制过来,最后把老字段删掉  alter table table_name add new_field_name int    update table_name set new_field_name = old_field_name    alter table table_...

2020-02-25 17:00:13

Silicon Valley Season 1-3

2020-02-23 22:55:46

Silicon Valley Season 1-2

2020-02-23 17:04:45

Silicon Valley Season 1

2020-02-22 20:20:09

We r making the world a better place

2020-02-21 17:46:37

TED 能让你多出10年额外寿命的游戏

I like to have goals.http://open.163.com/newview/movie/free?pid=M94IULLG6&mid=M94IV5478So I have been thinking about this question a lot lately.the time we spent playing games...

2020-02-20 17:19:04

TED 我无家可归的一年

http://open.163.com/newview/movie/free?pid=M94IULLG6&mid=M94IV5DJO

2020-02-20 17:03:33

TED My row across the Pacific

http://open.163.com/newview/movie/free?pid=M94IULLG6&mid=M94IVLE21I sat down one day, wrote two versions of my own obituary,

2020-02-19 19:56:56

TED 何以设立正确的目标是成功的秘密

https://www.bilibili.com/video/av65114991?p=24

2020-02-16 14:56:42

TED 伦敦地铁图中的智慧

https://www.bilibili.com/video/av65114991/

2020-02-16 14:54:04

TED 彼得·迪曼蒂斯: 我们的未来将会是富足的

http://open.163.com/newview/movie/free?pid=M8GV1NMA7&mid=M8H1CBOGM

2020-02-15 20:18:17

TED 科林·斯托克斯:电影中的男子气概

http://open.163.com/newview/movie/free?pid=M9PVR7UGG&mid=M9PVS52I5that is co-ed.成人世界是“男女混居的”。

2020-02-15 18:40:04

TED 去怀疑的勇气

http://open.163.com/newview/movie/free?pid=M93FDHRBE&mid=M93FFBHGNIt flew in the face of conventional wisdom, which was huge enthusiasm for the cool new technology of that age, which was ...

2020-02-15 17:26:04

TED 医生们会犯错误

http://open.163.com/newview/movie/free?pid=M93FDHRBE&mid=M93FEVR0J......Well it turns out, he didn't have a strep throat....... is that errors are absolutely ubiquitous. We ...

2020-02-15 10:03:00

TED 快乐藏在哪儿 我们该如何找到它

https://www.bilibili.com/video/av44356598?p=22

2020-02-14 22:08:37

TED 你能流利地使用这种语言

...... takes quite a bit of an intellectual effort.https://www.bilibili.com/video/av44356598?p=7Let's say u get to an unfamiliar place and u see this.......

2020-02-14 14:51:24

TED We could take better advantage of this cooling effect 

https://www.bilibili.com/video/av44356598?from=search&seid=6124668977125715677We could take better advantage of this cooling effectWe're probing these kinds of opportunities fur...

2020-02-14 14:05:23

TED 我们总是低估了时间的力量

哈佛心理学家丹吉伯特说,我们总是低估了时间的力量。你以为自己不会变了,但十年后可能你的人格仍然也会发生变化。年轻人花很多钱,洗去自己少年时花了很多钱做的纹身。中年人急着跟年轻时迫不及待想结婚的人离婚。老年人很努力的挥霍着作为中年人时不停工作所赚的钱。 为什么我们会做出让自己将来常常后悔的决定?http://www.sohu.com/a/213576865_9990141...

2020-02-14 12:30:14

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