select count distinct using pig latin

Question

I need help with this pig script. I am just getting a single record. I am selecting 2 columns and doing a count(distinct) on another while also using a where like clause to find

Answer 1

You could GROUP on each domain and then count the number of distinct elements in each group with a nested FOREACH syntax:

D = group C by domain;
E = foreach D { 
    unique_segments = DISTINCT C.segment;
    generate group, COUNT(unique_segments) as segment_cnt;
};