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Home > Backend Development > PHP Tutorial > c-请教一个关于海量数据的大文件统计问题

c-请教一个关于海量数据的大文件统计问题

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Release： 2016-06-02 11:33:30
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cphpc++多维度查询海量大文件

有一个大文件 20多G 里面一行一行的(csv格式，逗号隔开的那种)都是订单信息 主要的有用户id 商户id 还有就是订单id 需要求出的就是求出“每个商户”“每天的累计支付用户”和“每天的新增支付用户数”
PS：
最好能贴出代码，
最好可以用C或C++，php也ok，
还有就是内存不是很大 需要考虑内存原因
我需要求出的“累计支付用户”和“新增支付用户数”的uid是需要去除重复的

最终的展现效果类似于这种
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Related labels：
c php c++ 多维度查询 海量大文件
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