Hi guys,
7. how to get this output
i/p
col1,col2
101,a
102,b
103,c
104,d
o/p
col1,col2
101,d
102,c
103,b
104,a
Thanks
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Answer Posted / ankit gosain
Hi all,
For this scenario, construct a job like:
SeqFile------>Transformer------>Transformer----->SeqFile
Firstly, Change the execution mode of both the transformers
from default(parallel) to sequential.
Now, create a stage variable of varchar type in 1st
Transformer (say temp) & assign a default value to it
(say 'Ankit').
Now write in its derivation:
if temp='Ankit' then col2 else temp:',':col2
Now give the o/p derivation for the two columns as:
col1---col1
temp---col2
Now go to the 2nd Transformer & go to input tab and mention
the sorting on col1 as descending, create 3 stage variables
in it:
count1 of integer type with 0 as default value,
temp1 of varchar type with 'Ankit' as default value,
temp2 of varchar type.
then write in their derivation:
count1+1----------------------------------count1
if temp1='Ankit' then col2 else temp2-----temp1
temp1-------------------------------------temp2
Now write in O/p derivation of the columns:
col1-----------------------col1
field(temp2,',',count1)----col2
Now, do the sorting (ascending) on col1 in the o/p seqFile,
and drag & drop both the columns to the o/p link derivation
and you wil get the desired result.
If you have further queries, mail me on
ankitgosain@gmail.com
Cheers,
Ankit :)
| Is This Answer Correct ? | 7 Yes | 1 No |
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