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SQL 两个字段去重
答:
如果保证 o.name与c2.email_addr相同的其他表达式的值也相同,那就在select 后加上 distinct就可以了,distinct是剔除重复的记录,即每个字段或表达式的值都相同的只返回一条
我家离我的学校有二千米远器翻译成英文
答:
My house is two thousand meters far away
from
my school 这里有翻译网址:http://fanyi.baidu.com/
translate
#zh/en/%E6%88%91%E5%AE%B6%E7%A6%BB%E6%88%91%E7%9A%84%E5%AD%A6%E6%A0%A1%E6%9C%89%E4%BA%8C%E5%8D%83%E7%B1%B3%E8%BF%9C ...
域名密钥
答:
Preparing: The DomainKeys-enabled receiving email system extracts the signature and claimed
From
: domain
from
the email headers and fetches the public key from DNS for the claimed From: domain.准备:domainkeys-接收电子邮件系统,使提取签名并声称来自:从电子邮件、绿头域公钥来自声称来自域名为:域. This ...
一个耶鲁大学本科申请的面试经历
答:
L: Can I ask what have you gained most
from
Yale? C: … (thinking)… You mean what is the most important that I've gained from Yale? L: Right. C: … I think, it's how to write and think. Yale really helped me to write better and to think critically to everything, asking wh...
【200分汉译英】女性穿高跟鞋之迷?
答:
and then fall after the reaching the extreme. Of course, there are times that are inconsistent with the law, such as when the woman is pregnant. But the exception doesn't last long, lasting
from
when the stomach starts to bulge out to the very highlight of laboring, only a ...
bbc 英文简介
答:
each appointed by the government for five years. The BBC was converted
from
a private company (established in 1922) to a public corporation under royal charter in 1927. Under the charter, news programmes were required to be politically impartial. The first director-general was John R...
MFC我点鼠标左键用creat创建按钮,然后我想再点击这个创建的按钮,然后移 ...
答:
你的意思是右键创建一个按钮后,然后通过鼠标移动来实现拖动按钮?首先派生一个按钮类。在右键中生成该对象。然后在按钮的类里面左键按下消息里面开始确定一个变量,确定移动按钮,移动消息里面用movewindow或者getwindwpos移动按钮。鼠标up的时候确定了按钮的位置 ...
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