Why the UNION TRANSFERMATION is an Active TRANSFERMATION
- 6 Answers
- 8037 Views
- Emphasis, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
In Union Transformation we may combine the data from two
(or) more sources. Assume Table-1 contains '10' rows and
Table-2 contains '20' rows. If we combine the rows of
Table-1 and Table-2 we will get a total of '30' rows in the
Target. So it is definitely an Active Transformation.
| Is This Answer Correct ? | 9 Yes | 5 No |
Answer / krishna
The above answer is correct and there is another reason to
call union transformation is active. That is UNION
trsnsformation is derived from custom transformation which
is active transformation
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / reddy
Hello Priya,
The Union Transformation is acts like as UNION ALL. The
total output is 6 records.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / narendra.s
1)A transformation that effect the no of rows or change the no of rows while processing the data.
2)In this way the union transformation is change the 10+5 records into 15 records.
3)union transformation can't remove the duplicate records.
4)we can create multiple input groups, but only one output group.
In this way we can cal union is an Active and Connected transformation.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / ramz
yes u r right 6 inputs and same as 6 output right then it s active or passive
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / priya yadav
Any Tranformation that changes the no of passed records
while processing is an active transformation. Union
transformation unions the record from different
sources/transformations(whatever it is in mapping), so the
no of records input to it are different from the no of
records that you recieve as output from it. Thats why it is
considered as an active transformation.
For Example,
You union these records from tweo Sources:
Source A: Source B:
A 1 2 D 7 8
B 3 4 A 1 2
C 5 6 E 4 3
Total Input Records: 6
Output Target:
A 1 2
B 3 4
C 5 6
D 7 8
E 4 3
Total: 5
Hope it helps!!!
Thank you!!
Priya Yadav
| Is This Answer Correct ? | 1 Yes | 4 No |
Is it possible to update the target table with PK?
in flatfile target how can u create header and footer plese give me the comands how will u write in session properties
111111111111ravi11111111kumar11111111111? i want display ravi kumar using sql?
1,If there are 3 workflows are running and if 1st workflow fails then how could we start 2nd workflow or if 2nd workflow fails how could we start 3rd workflow?
4 Answers CompuSoft, EDS, TCS,
What are mapping parametres and variables in informatica?
What is a parameter When and where do you them when does the value will be created
what is mean by grouping of condition column in lookup transformation?
what is the difference between mapplet & stored procedure?
who is the best faculty for informatica in hyderabad ameerpet?
Why can't we connect source qualifier and aggrigator transformation to an expression ? Why they resticted to conncet 2 active trasformations to an passive transformation ?
I have source like this 1:2;3. so i want to load the target as 123
how do u tune queries?
Teradata 
