Apache pig 应用于每个组属性的Pig拉丁限制运算符

根据各州的人口，我试图只返回五个最大的地方。我还试图按州名对结果进行排序，每个州的地方都按人口递减顺序排列。目前，我只得到了各州的前五名，而不是每个州的前五名

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下面的代码片段可能会有所帮助

inp_data = load 'input_data.csv' using PigStorage(',') AS (state:chararray,place:chararray,population:long);

req_stats = FOREACH(GROUP inp_data BY state) {
    ordered = ORDER inp_data BY population DESC;
    required = LIMIT ordered 5;
    GENERATE FLATTEN(required);
};

req_stats_ordered = ORDER req_stats BY state, population DESC;

DUMP req_stats_ordered;

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下面的代码片段可能会有所帮助

inp_data = load 'input_data.csv' using PigStorage(',') AS (state:chararray,place:chararray,population:long);

req_stats = FOREACH(GROUP inp_data BY state) {
    ordered = ORDER inp_data BY population DESC;
    required = LIMIT ordered 5;
    GENERATE FLATTEN(required);
};

req_stats_ordered = ORDER req_stats BY state, population DESC;

DUMP req_stats_ordered;

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您可以添加示例输入和预期输出吗？您可以添加示例输入和预期输出吗？