我正在使用官方Angular2网站上的packages.json,快速入门.昨天它工作正常,今天npm无法解决家属.我收到错误:
npm ERR! peerinvalid The package @angular/core@2.0.0-rc.3 does not satisfy its siblings' peerDependencies requirements!
npm ERR! peerinvalid Peer @angular/common@2.0.0-rc.3 wants @angular/core@2.0.0-rc.3
npm ERR! peerinvalid Peer @angular/compiler@2.0.0-rc.3 wants @angular/core@2.0.0-rc.3
npm ERR! peerinvalid Peer @angular/forms@0.1.1 wants @angular/core@2.0.0-rc.3
npm ERR! peerinvalid Peer @angular/http@2.0.0-rc.3 wants @angular/core@2.0.0-rc.3
npm ERR! peerinvalid Peer @angular/platform-browser@2.0.0-rc.3 wants @angular/core@2.0.0-rc.3
npm ERR! peerinvalid Peer @angular/platform-browser-dynamic@2.0.0-rc.3 wants @angular/core@2.0.0-rc.3
npm ERR! peerinvalid Peer @angular/router@3.0.0-alpha.7 wants @angular/core@^2.0.0-rc.2
npm ERR! peerinvalid Peer @angular/router-deprecated@2.0.0-rc.2 wants @angular/core@^2.0.0-rc
npm ERR! peerinvalid Peer @angular/upgrade@2.0.0-rc.3 wants @angular/core@2.0.0-rc.3
npm ERR! peerinvalid …我正在进行简单的基于Web的聊天,所以我需要从MySQL数据库中获取(例如)30条最新消息.这没有任何问题,但我怎样才能将数据向上调整？我的意思是,最早的信息是第一个.我必须通过增加时间来记录最新的30条记录.
编辑:谢谢你的答案,但......
ORDER BY添加了DESC LIMIT 30
得到:
15,14,13,12,11
......我需要:
11,12,13,14,15
我知道我可以使用子查询来获取它.有没有更好的方法？