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運行此PIG腳本時出現以下錯誤....請幫助!!! 在此先感謝。使用SUM時出現豬腳本錯誤()
"ERROR 1000: Error during parsing. Scalars can be only used with projections"
MOVIES = LOAD '/MOVIES' using PigStorage(',') as (mid:double, mn:chararray, yr:int, rt:float, dr:int);
Filter11 = filter MOVIES by $2 >= 1950;
Filter12 = filter Filter11 by $2 <= 1960;
Group1 = group Filter12 by yr;
Count1 = foreach Group1 generate group, COUNT(Filter12);
Sum1 = foreach Count1 generate SUM(Group1);
DUMP Sum1;
你想在這裏實現什麼? – bartektartanus
SUM函數需要在MOVIES中定義的其中一列上執行。 –