How to delete first 3 rows & last 3 rows in target table in informatica

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How to delete first 3 rows & last 3 rows in target table in
informatica

Question Posted / udaya

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How to delete first 3 rows & last 3 rows in target table in informatica..

Answer / venkateshmalneni

FIRS PIPELINE
BY using sequence generator t/r generate sequence
numbers(sno)
in rank t/r,from sq connect all the ports to the rank
t/r,rank by sno,select top 3 ranks
SECOND PIPELINE
connect the nextval port from sequence generator to sorter
t/r
from sq connect all the ports to the sorter t/r,connect all
the ports to the filter t/r.in filter t/r write a condition
sno>3.

connect the o/p of the two pipelines by using UNION T/R
connect the o/p of the Union t/r to aggrigator t/r group by
sno.create an o/p port with name count_sno to
count(sno),connect the o/p from aggrigator t/r to the filter
t/r write the condition count_sno=1.
connect the o/p from filter to trg
THE DATA FLOW DIAGRAM IS LIKE THIS
sequence generator
| |
| \|/
src--->sq--->rank------>union--->aggrigator---->filter->trg
| | /
\|/ \|/ /
sortet----->filter/

If am wrong please let me know

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How to delete first 3 rows & last 3 rows in target table in informatica..

Answer / venkateshmalneni

Is This Answer Correct ?

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How to delete first 3 rows & last 3 rows in target table in informatica..

Answer / civa

take seq trns and drag nextval port into exp trns and also
drag sq ports to exp

in exp delete from emp where nextval= 1 or 2 or 3 and
nextval=count(empno)-1 or count(empno)-2 or count(empno)-3

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3 No

How to delete first 3 rows & last 3 rows in target table in informatica..

Answer / kiran

Question state Target table!! All above answers are for
Source table!

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How to delete first 3 rows & last 3 rows in target table in informatica..

Answer / santosh kumar sarangi

create a sequence t/r and link the next value with sq t/r to
expression t/r and. Create two link.
First Link:
Connect ex t/r to update strategy t/r and keep condition as
IIF(NEXTVAL<4,DD_DELETE,DD_REJECT) and connect to target
except the nextval column.
Second Link:
Connect to sorter t/r and sort with descending order of
nextval and rename as in_nextval. create new sequence
generator and link to the same ex t/r. Link the ports to
again one more update strategy t/r and keep the same condition
as IIF(NEXTVAL<4,DD_DELETE,DD_REJECT) and link to the one
more instance of target table.

Let me know if any things wrong.

Thanks & regards,
Santosh Kumar Sarangi

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How to delete first 3 rows & last 3 rows in target table in informatica..

Answer / suresh

cant we write a subquery?

delete from table emp where exists (select * from emp where rownum=1 or 2 or 3);

count(empno) --> has to be stored in a variable port and delete the last three rows of the target table.

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