Answer / suresh

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

Answer / mayuri

Select ditinct in properties of source qualifier
transformation.

Answer / infa dev

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.

Answer / julius caeser

Hi
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.

Answer / aswin

use aggregator and do not apply any aggregation function, it will return only last row in the group..if you dont provide any groupby and aggregate value it will return only last row..so you can aviod dups

Answer / mayuresh

Hi,

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

Answer / sarvesh

create table newtable as select distinct * from original
tablename;
by doing this we can elimate the duplicate rows

we r using aggregator with out using groupby?

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