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摘要： Filter :用于筛选所需的行。 例子： A = LOAD 'data' AS (a1:int,a2:int,a3:int); DUMP A; (1,2,3) (4,2,1) (8,3,4) (4,3,3) (7,2,5) (8,4,3) 筛选第3个字段等于3的： X = FILTER A BY f3 == 3; DUMP X; (1,2,3) (4,3,3) (8,4,3) 筛选； X = FILTER A BY (f1 == 8) OR (NOT (f2+f3 > f1);F... 阅读全文