本文介绍如何利用Grunt处理Hive中的数据，包括加载数据、过滤、限制及统计数据等关键步骤。
grunt> res = load '/user/hive/warehouse/0hk8ubfx/'
>> as (guid:chararray, rate:double);
grunt> ret = filter res by rate>0.0;
grunt> ret = limit res 500;
>> as (guid:chararray, rate:double);
grunt> ret = filter res by rate>0.0;
grunt> ret = limit res 500;
grunt> dump ret;
grunt> cnt = foreach(group ret all) generate COUNT(ret);
grunt> dump cnt;
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