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I have a flat file, in which I have two fields emp_id, emp_name. The data is like this- emp_id emp_name 101 soha 101 ali 101 kahn 102 Siva 102 shanker 102 Reddy How to merge the names so that my output is like this Emp_id Emp_name 101 Soha ali Kahn 102 Siva shanker Reddy


                                                                                                                                                                      
Scenario:
I have a flat file, in which I have two fields emp_id, emp_name. The data is like this-
emp_id emp_name
101                soha
       101                 ali
101                kahn
102                Siva
102                shanker
102                Reddy
How to merge the names so that my output is like this   

Emp_id  Emp_name
101                 Soha ali Kahn
102                 Siva shanker Reddy


Solution:
Follow the below steps
  1. user a sorter transformation and sort the data as per emp_id
  2. Use Exp transformation:
Create blow ports
V_emp_id = emp_id
V_previous_emp_id = emp_id
V_emp_name = emp_name
V_emp_full_name = iif(V_emp_id = V_previous_emp_id , V_emp_name||’ ’||                     V_emp_full_name, V_emp_name)
O_emp_full_name = V_emp_full_name
O_counter = iif(O_counter is null,1,O_counter+1)
  1. output will look like
emp_id emp_name                                          Counter
101        soha                                                      1
                                                101        soha  ali                                               2
101        soha  ali kahn                                    3
102        Siva                                                       4
102        Siva shanker                                      5
102        Siva shanker Reddy                       6

  1. Send Emp_id and Counter to Agg, where take a max counter for each id so o/p will be
Emp_id  Counter
101                3
102                6
5. Joint output of step three and 4, you will get desire output as
Emp_id  Emp_name
103                 Soha ali Kahn
104                 Siva shanker Reddy


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