http://q.r90.us/ 号外,大家去查查看开房记录里面是否有你
Twitter 上@Leaskh 整理好的 UTF-8 的 csv 格式https://www.copy.com/s/UyiPPS4mZtnZ/Public/shifenzheng.csv.zip 有点大 1g+...
The purpose of cat is to concatenate (or "catenate") files. If it's only one file, concatenating it with nothing at all is a waste of time, and costs you a process.
< shifenzheng.csv
你可以试试 mongodb $ mongoimport -d mydb -c things --type csv --file this.csv --headerline
然后就可以用各种各样的查询,比如说 aggregation, map reduce。。