I HAVE A SOURCE FILE CONTAINING
1|A,1|B,1|C,1|D,2|A,2|B,3|A,3|B
AND IN TARGET I SHOULD GET LIKE
1|A+B+C+D
2|A+B
3|A+B
WHICH TRANSFORMATION I SHOULD USE
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Answer / nitin
Create two mapping pipelines
One pipeline is to
1) Break the record 1|A,1|B,1|C,1|D,2|A,2|B,3|A,3|B using normalizer transformation
1|A
1|B
1|C
1|D
2|A
2|B
3|A
3|B
Then pass the records into a flat file target.
Source-->SQ-->Normaliser--> Target (Output_file1)
Output_file1-->SQ--> Aggregator-->Target(Output_file2)
Create another mapping pipeline where the above records act as the source and the delimiter as '|'.
Use an aggregator transformation to group based on the first column and use the SUM(col2) GROUP BY col1.
write the output to the target file with | as delimiter
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / nitin
1) Src-->SQ->Normalizer-->Target
The first pipeline breaks the rows and convert to columns and then write to target file.
1|A
1|B
1|C
1|D
2|A
2|B
3|A
3|B
2)Src->SQ->Exp->Target
The second pipeline receives the above output with '|' as delimiter and passes to expression.
In the expression transformation concatenate the second column with + for the same first column and then write to target with | as delimiter
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / ankit kansal
There is only one row as per the defined problem. so first you have to break down this one row into multiple rows as separated by delimiter ','.
1|A
1|B
1|C
1|D
2|A...
Now in Expression Transformation using some string functions and later using rank/aggregator T/S you can achieve your result...
http://deepinopensource.blogspot.in
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / amedela chandra sekhar
By using aggregator t/r we can achieve.
use || function
| Is This Answer Correct ? | 3 Yes | 5 No |
Answer / guest
Aggregator with group by on column with values 1, 2, 3
| Is This Answer Correct ? | 7 Yes | 12 No |
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