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How to delete duplicate record in Informatica?
 Question Submitted By :: Laxman
I also faced this Question!!     Rank Answer Posted By  
  Re: How to delete duplicate record in Informatica?
# 1
Select ditinct in properties of source qualifier
Is This Answer Correct ?    20 Yes 6 No
  Re: How to delete duplicate record in Informatica?
# 2
create table newtable as select distinct * from original
by doing this we can elimate the duplicate rows
Is This Answer Correct ?    6 Yes 9 No
  Re: How to delete duplicate record in Informatica?
# 3
if the source is database means we can delete the duplicate
records by enabling the option select distinct in source
qualifier t/r properties or by writing the following query
in source qualifier filter

delete from emp where rowid not in (select min(rowid) from
emp group by empno);

if the source is flat file means by enabling the option
distinct in sorter t/r we can delete the duplicate records
Is This Answer Correct ?    21 Yes 1 No
  Re: How to delete duplicate record in Informatica?
# 4
Source and the target will the same table from which the
duplicate needs to be deleted from. Then use a lookup trans
on to this same table and then use an update trans with
DD_DELETE if the row is duplicate else do nothing.
Is This Answer Correct ?    11 Yes 2 No
Infa Dev
  Re: How to delete duplicate record in Informatica?
# 5
There are 2 ways to do this and both of them are efficient.
Method 1: Sorter -Filter.
Send all the data to a sorter and , sort by all feilds that
u want to remove duplicacy from . note that in the
preoperties tab, select Unique .
This will select and send forward only Unique Data .

Method 2; Use an Aggregator
Use AGG Transformation and group by the keys /feilds that u
want to remove duplicacy from.
Is This Answer Correct ?    9 Yes 2 No
Julius Caeser
  Re: How to delete duplicate record in Informatica?
# 6

how to delete duplicate values from table if source and
target are same

my Question is which logic we need to apply before using
DD_DELETE option in update strategy ?

Do we require to use aggregator to group the values and if
there count > 1 then DD_DELETE

PLZ reply
Is This Answer Correct ?    0 Yes 0 No

Other Informatica Interview Questions
  Question Asked @ Answers
which quality process u can approach in ur project CTS 1
hi guys..iam a QA person ..what is ETL TESTING... what is the process of ETL testing... ETLTESTER needs etl devolopment knowledge or not? pls suggest ur valuable decision   2
How the Informatica Server reads perameter file?   1
Hi all, iam new to informatica, can anyone tell me what is unit testing & how it is done? thank u   3
Source table ------------- ID NAME --- ------ 101 PANKAJ NULL KUMAR NULL MATHUR 102 JYOTI NULL SAXENA 103 SACHIN NULL TENDULKAR TARGET TABLE ------------- ID NAME --- ------- 101 PANKAJ KUMAR MATHUR 102 JYOTI SAXENA 103 SACHIN TENDULKAR How to do the above scenario in Informatica. Cap-Gemini 4
how the informatica server sorts the strings values in rank transformations? TCS 3
tell me some dimension tables names in banking domain informatica project(dont tell like depends on project, tell me names of dimension and fact table names in your project)? TCS 2
Suppose in the next version of Informatica, RTR Xn is excluded. Then how will u route data to different tgts? Deloitte 2
I have data like sno mailid 1 2 3 .. ..... like this for N no.of how we will send a message 'meet hr' at a time in windows environment by the informatica.. DELL 2
how we can add header and footer to flat files? Zensar 2
I have a scenario which load the data frm single source to 2 targets as T1, T2, and T1 have a P.K and T2 have F.K relations. first data has to load in T2, and then data load to T1 if that record exist in T1... how can we acheive it? Ness-Technologies 2
Hi All, I've 110 records in my table but 101 records contains an error. When I run the session, I want to load the 100 records into the target. Can anyone suggest me the best solution for this... Thanks in Advance, Tech-Mahindra 6
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