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 DataStage  |  Question 354 of 369    Print  
Remove Duplicate Records
what is process to remove duplicate records using Copy Stage.


  
Total Answers and Comments: 0 Last Update: April 13, 2008     Asked by: venkata ramana 
  
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Latest Answer : sql: delete from tablename a where rowid>(select min(rowid) from tablename b) where a'key values=b.key values.datastage server:using sort stage(option:allow duplicates(yes/no))or hash fileparallel: remove duplicate stageRegards,Madhava ...
Latest Answer : using Orabulk ...
What are other Performance tunings you have done in your last project to increase the performance of slowly running jobs?
Staged the data coming from ODBC/OCI/DB2UDB stages or any database on the server using Hash/Sequential files for optimum performance also for data recovery in case job aborts.Tuned the OCI stage for 'Array 
Latest Answer : Hash file can be used to elimate duplicate records ...
What is the mean of Try to have the constraints in the 'Selection' criteria of the jobs itself. This will eliminate the unnecessary records even getting in before joins are made?
Read Answers (3) | Asked by : sudhakar
If a DataStage job aborts after say 1000 records, how to continue the job from 1000th record after fixing the error?
Read Answers (3) | Asked by : etl
Latest Answer : Explain ...
Read Answers (3) | Asked by : Priyanka
Latest Answer : if your environment is unix , you can check with wc -l filename command. ...
Read Answers (1) | Asked by : laxman
Latest Answer : You can do it at any stage.Just do a hash partion of the input data and check the options Sort and Unique.This will do. ...
Read Answers (4) | Asked by : Reddy
1 1. Difference between Hashfile and Sequential File?. What is modulus?2 2. What is iconv and oconv functions?.3 3. How can we join one Oracle source and Sequential file?.4 4. How can we implement Slowly Changing Dimensions in DataStage?.5 5. How can we implement Lookup in DataStage Server jobs?.6 6. What are all the third party tools used in DataStage?.7 7. what is the difference between routine and transform and function?.8 8. what are the Job parameters?.9 9. Plug-in?.10 10.How can we improve
Read Answers (1) | Asked by : Zias

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