source target
--------- --------
name no sal name no sal max_sal
r 10 1000 r 10 1000 3000
y 20 3000 y 20 3000 3000

Answer Posted / abhinav prakash

1.Pass the ports to an expression t/r.
create a dummy port and give the value as '1'
2.Pass only the salary port to an Aggregator t/r.
Create a dummy port with the same data type and column name
and value as expression.
create o/p port:max(salary)
3.Join these 2 t/r using joiner and join on the dummy port.
ensure u have checked the sorted input option.
4Pass the o/p to the target.

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