create a job to get the previous row salary for the current row.if there is no previous row exists for the current row,then the previous row salary should be displayed as null?
empid salary previoussalary
10 1000 null
20 2000 1000
30 3000 2000
40 4000 3000
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Answer Posted / anil
1. Input file-> Transformer -> Peek
2. Keep Tranformer in sequential mode or Make partition as same
3. Two stage variables
StgPrevSalary
StgCurrSalary
Derivations - StgVariables
StgCurrSalary- StgPrevSalary
Sal- StgCurrSalary
Output
Emp
StgCurrSalary
StgPrevSalary
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