hadoop - 从 PIG JOIN 的其他关系中选择一个关系所有字段和一个或两个，如何？

Question

A = load '$input1' using pigStorage() AS (a,b,c,d,e)
B = load '$input2' using pigStorage() AS (a,b1,c1,d1,e1)
C = JOIN A by a, B by a; 
D = do something;

'D' 应该是格式 (a,b,c,d,e,b1)

如何实现？

Answer 1

D = FOREACH C GENERATE A::a .. A::e, B::b AS b1;