when U have a remove dublicate option in sort stage, why we
have a remove dublicate stage in PX, thought it is
recamended to sort data before using a remove dublicate
stage. I hae been thinking this from days....

Answers were Sorted based on User's Feedback



when U have a remove dublicate option in sort stage, why we have a remove dublicate stage in PX, t..

Answer / prasu

In Duplicate Stages we have more number of optionscompare
to sort while removing duplicates.If you have less number
if data you can go with Sort stage to remove duolicats.If
you have large number of data go for Remove Duplicates
Stage.

Is This Answer Correct ?    8 Yes 0 No

when U have a remove dublicate option in sort stage, why we have a remove dublicate stage in PX, t..

Answer / phani kumar

Sort stage is used to sort the data and having option of
identifying the duplicate records with the value of Key
change column. But, to perform sort and remove duplicates is
leads to decrease the performance. So, it is preferable for
less amount of data.

Remove duplicates stage is used to get only unique records
either first occurrence or last occurrences. For large
amount of data, sorted data is required for better performance.

Correct me if iam wrong..........

Thanks and regards....
Phani kumar

Is This Answer Correct ?    8 Yes 0 No

when U have a remove dublicate option in sort stage, why we have a remove dublicate stage in PX, t..

Answer / data master

Sort Stage do Sorting of data and performing Remove
Duplicate records, which will slow the performance of job
(Hence it is better to sort data at database level).

If the data is already sorted than use the Remove Duplicate
Stage to remove duplicate records, Which will give better
performance of job than above situation.

Is This Answer Correct ?    3 Yes 2 No

when U have a remove dublicate option in sort stage, why we have a remove dublicate stage in PX, t..

Answer / swati

In Remove Duplicate stage you will get only unique records.

In sort Stage you will get both unique and duplicate records based on key change column.

Is This Answer Correct ?    1 Yes 0 No

Post New Answer

More Data Stage Interview Questions

How can we select pr retrieve the particular row in dataset by using orchadmin command?

1 Answers   IBM,


in oracle target stage when we use load option and when we use upsert option?

0 Answers  


Difference between data warehousing and olap?

0 Answers  


What is orabulk stage?

0 Answers  


how to convert rows into columns

2 Answers   IBM,






i have flat file and using unix how can i generate sequence number into targer?

1 Answers   Cap Gemini,


In merge stage can we update the values?

3 Answers   TCS,


Is it possible to query a hash file?

0 Answers   IBM,


What are the unit test cases you used in your project?

1 Answers   CSC, HY,


i want anser this question empno,ename,sal 12,mmm_ww,200 13,nnn_xx,300 14,bbb_qq,400 which stages are take which types of logicks are doing pls help me

0 Answers  


Hi guys, Design job sequence, we have 3 sources, in that 1st source in abort then only run the remaining sources.. How please design the job. Thanks.

2 Answers   IBM,


Hai..,in datastage how to explain project in interview?please explain any domain please.

1 Answers   Wipro,


Categories