Pig Forum

Tutotial # 2

  • #56853
    Elmer Buard


    batting = LOAD ‘Batting.csv’ USING PigStorage(‘,’);
    raw_runs = FILTER batting BY $1>0;
    runs = FOREACH raw_runs GENERATE $0 AS playerID, $1 AS year, $8 AS runs;
    grp_data = GROUP runs BY (year);
    max_runs = FOREACH grp_data GENERATE group as grp, MAX(runs.runs) AS max_runs;
    join_max_runs = JOIN max_runs BY ($0, max_runs), runs BY (year, runs);
    join_data = FOREACH join_max_runs GENERATE $0 AS year, $2 AS playerID, $1 AS runs;
    DUMP join_data;

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