IN A MAPPING WHEN WE USE AGGRIGATER TRANSFORMATION WE WILL
USE GROUP BY PORT. IF GROUPBY IS NOT SELECTED BY DEFAULT IT
WILL TAKE ONLY THE LAST COLUMN WHY????

Answers were Sorted based on User's Feedback



IN A MAPPING WHEN WE USE AGGRIGATER TRANSFORMATION WE WILL USE GROUP BY PORT. IF GROUPBY IS NOT SEL..

Answer / prathap

IF GROUPBY IS NOT SELECTED INFORMATICA SERVER UNDERSTANDS WHOLE TABLE AS A ONE GROUP AND ITS GIVE LAST RECORD OUT

Is This Answer Correct ?    2 Yes 1 No

IN A MAPPING WHEN WE USE AGGRIGATER TRANSFORMATION WE WILL USE GROUP BY PORT. IF GROUPBY IS NOT SEL..

Answer / amedela chandra sekhar

Aggregator t/r perform calculations from first record to
last record.There is no group it will take last record
if u are not selected groupby the integration service returns
last record from all input rows.

Is This Answer Correct ?    4 Yes 5 No

IN A MAPPING WHEN WE USE AGGRIGATER TRANSFORMATION WE WILL USE GROUP BY PORT. IF GROUPBY IS NOT SEL..

Answer / amedela chandra sekhar

when u want to perform calculations on groups u can go for
aggregator t/r.aggregate functions like
min,max,last,first,count ...

if u are not selected groupby the integration service returns
last record from all input rows.

why means that integration service rule.

Is This Answer Correct ?    3 Yes 7 No

Post New Answer

More Informatica Interview Questions

What are steps to follow Informatica migration from 7x to 8x? Pls Explain...

1 Answers   CTS, TCS,


what is filelist concept in informatica

4 Answers  


How to Join Tables my Source is having 15 table target is one?

4 Answers   TCS,


my source is a comma delimited flatfile as eno, ename, sal 111,sri,ram,kumar,1000 and my target should be eno ename sal 111 sri ram kumar 1000 i.e; we need to eliminate the commas in between the data of a comma delimited file.

5 Answers   IBM,


how to load the data in fact table.. using look up transformation how to view the second record. usally look up shows matching record for only one value. if i have same value its not displaying. ex: problem i faced. i have total, student no and name in table student i used aggregation transformation to display max(total). i have two same max values in total. when i look up the student name and no for this max(total), its showing only one name and no, its leaving the second one. how to rectify it. plz tel me step by step or clearly.

1 Answers  






In which scenario did u used Mapping variable?

1 Answers   Cognizant,


What is CHECK-IN CHECK-OUT. Please explane me?

3 Answers   TCS,


What type of sorting algorithm does the Sorter Transformation use, to do its sorting Operation? 1. Bubble sort 2. Insertion sort 3. Shell sort 4. Merge sort 5. Heapsort 6. Quicksort 7. Bucket sort

3 Answers  


how will u load the data to diminision tables and fact tables,what is the hiraraichy why we are using hirarichy

2 Answers   TCS,


explain abt union t/r?

1 Answers   IBM,


In informatica workflow manager, how many repositories can be created?

0 Answers  


How to join a Flat and Relational Source without using (Joiner, Update and Lookup ) transformations... is it possible? if yes i would like to know how?

10 Answers   Wipro,


Categories