我们可以使用bincond运算符（？：）或case语句（来自wards上的pig版本：0.12）来实现目标。

RESULT_SOMETYPE = FOREACH SOMETYPE_DATA_GROUPED  GENERATE flatten(group) AS grp_name , SUM(SOMETYPEDATA.DURATION) as duration_sum, COUNT(SOMETYPEDATA.DURATION) as cnt;

result_required = FOREACH RESULT_SOMETYPE GENEATE grp_name, 
                        (duration_sum > 0 AND duration_sum < 1000 ? 1 : 
                                        (duration_sum > 1001 AND duration_sum < 2000 ? 2 : 
                                                (duration_sum > 2001 AND duration_sum < 3000 ? 3 : 9999)     
                                        )
                         ) AS duration, cnt;

参考：http://pig.apache.org/docs/r0.12.0/basic.html#arithmetic

SPLIT 会这样做，但不会在里面 FOREACH 循环。pig还有一个三元运算符之类的东西，但这对将结果存储在变量中没有帮助。下面是如何使用split来实现接近您需求的功能。

A = LOAD '/home/vignesh/a.dat' using PigStorage(',') as (a:int,b:int,c:int);
SPLIT A INTO B IF (a > 0 AND a < 1000),  C IF (a > 1001 AND a<2000), D IF (a > 2001 AND a < 3000);