Interested to Buy Any Domain ? << Click Here >> for more details...
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
- 5 Answers
- 29857 Views
- Genpact, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / venkata ramana
Input:Seq file
empid,salary
10,1000
20,2000
30,3000
40,4000
Sequential file stage--->Trasformar Stage---->Dataset Stage
Transformation Logic:
InputTab-->Partition--> select "same"---> Select "Perform Sort" on key "empid"
Declaration of Stage Variables:
PrevSal Varchar ( Set right Intial value ' ' i.e Null value)
CurSal Varchar
Derivation Stage Variables
---------- ---------------
CurSal PrevSal
Linkname.Salary CurSal
Derivation Column name
--------- -----------
Linkname.empid empid
Linkname.Salary Salary
PrevSal previoussalary
Output DataSet result:-
empid salary previoussalary
10 1000 null
20 2000 1000
30 3000 2000
40 4000 3000
| Is This Answer Correct ? | 7 Yes | 3 No |
Answer / indu
inputfile-->transformer-->outputfile
create stage variables
current salary
previous salary(intialize this to null)
derive them as below:
current salary-->previous salary
previous salary---> salary
in the output file derive previous salary as below
previoussalary--->current salary
| Is This Answer Correct ? | 3 Yes | 2 No |
Answer / indu
input file-->transformer--> output file
declare stage varibales
current salary
previous salary and initialize the previous salary to null
current salary--> previous salary
previous salary->salary
in the output file derive previousalary as
previoussalary-->current salary (stage variable)
| Is This Answer Correct ? | 3 Yes | 2 No |
Answer / 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
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / indu
input file->transformer-> output file
in transformer declare stage variables as below:
current salaray
salary
previous salary
Initialize previous salary to null
current salary ---> previous salary
previous salary----> salary
In the output file derive the previous salary as
previousalary--->previous slary (stage variable)
| Is This Answer Correct ? | 0 Yes | 0 No |
Lookup constraints
How one source columns or rows to be loaded in to two different tables?
What is the difference between datastage and datastage tx?
I have a input as: Col 1 1 2 2 3 I want 3 output as: Output1: 1 1 Output2: 2 2 Output3: 3 i.e. same duplicates should be in one target, other duplicate values should be in another target and so on.. Pls help
In Datastage, how you can fix the truncated data error?
how to run a sequential file stage in parallel if the stage is used on the TARGET side
in one scenario source flat file like Fileld1 00122001550056200568 00256002360014500896 00123004560078900258 00147004560025800256 divide each 5 numbers as one column i.e here i need field1 field2 field3 field4 00122 00155 00562 00568 00256 00236 00145 00896 00123 00456 00789 00258 00147 00456 00258 00256 plz help me....
How do you generate sequence number in datastage?
source file having the data like aabbccc, i want target file result like a1a2b1b2c1c2c3.
In Sequential file, how can i split a column into two, and that column contains string datatype. For Example, i have column of string datatype as subedar khaja. Now i want get output as separately with subedar in one column and khaja in second column. How? Coula anybody, solve it?
How to LOG 'unmatched Master' records and 'Reject Updates' in log files using MERGE stage?
Input file one has data as shown below 1 2 3 4 5 6 7 8 Input file two has data like 6 7 8 9 10 11 Design a data stage job which will provide me three output files as shown below: Output 1 6 7 8 Output 2 1 2 3 4 5 Output 3 9 10 11 Let me know your answers
Teradata 
