Abinitio Interview Question 45

                          Abinitio Interview Question 45




Get the unique values from the input data
Input
code, country
1, India
2, Mumbai
1, USA
2, Newyork
1,          UK
2, Edinburgh
2, London




output
code, countries
2, India,Mumbai
2, USA,Newyork
2, UK,Edinburgh,London




type temporary_type=
record
string(",") l_countries;
decimal("") cnt;
end;

temp::initialize(in)=
begin
temp.l_countries::in.country;
temp.cnt::0;
end;


out::key_change(in1,in2)=
begin
out::if(in1.code==1);
end;


out::rollup(temp,in)=
begin
out.l_countries::if(temp.cnt!=0) string_concat(temp.countries,',',in.country);
out.cnt::temp.cnt+1;
end;

out::finalize(temp,in)=
begin
out.code::in.code;
out.countries::temp.l_countries;
end;

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