Using Expression transformation how to remove duplicate
records from a relational source?
Answers were Sorted based on User's Feedback
Answer / prathibha
Hi,
Source->SQ->Sorter->Expression->FilterTarget.
Lets take a small example for this scenario.
Use a sorter to sort the input data.
ID Name
1 A
1 A
2 B
3 C
3 C
In Expression Transformation declare the following ports:
ID
Name
O_Count= iiF(V_port=ID,O_Count=O_count+1,O_Count=0)
V_port(Variable Port) = ID;
In filter transformation give the condition O_Count =0;
Let me know if there are any suggestions.
| Is This Answer Correct ? | 17 Yes | 2 No |
Answer / babu
Hi,
SRC-->SQ(ENABLE DISTINCT )-->EXP-->TRG
OR
IN EXP T/R TAKE 4 VARIABLE PORTS AND OUTPUT PORT,
SRC HAVEING THE COLUMNS LIKE COL1,COL2,COL3
SRC-->SQ-->SRT(PLEASE TAKE ALL ARE KEY PORTS)-->EXP
(VAR IS IIF(VAR1=COL1 AND VAR2=COL2 AND
VAR3=COL3),1,0)
VAR1=COL1
VAR2=COL2
VAR3=COL3
OUT=VAR
-->UPD(IIF(OUT=1,DD_REJECT,DD_INSERT))-->TRG
IF ANY THING WRONG PLEASE LET ME KNOW.
8861145051
| Is This Answer Correct ? | 6 Yes | 9 No |
Answer / bijay
The mapping should be like this
SRC->SQ->EXP->TARGET
In source qualifier transformation select 'ENABLE DISTINCT',
then it will send only distinct record to the expression transformtion. And From expression transformation simply connect to the target
| Is This Answer Correct ? | 2 Yes | 5 No |
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