Answer / satya

If we use Aggregator without using group by option we will
get only one row from source. It is a default charater of
Informatica.

e.g If there are 20 rows in the source table and only
using SQ and followed by Aggregator then target table then
the target table will be populated by the last row coming
from teh source table.

Answer / dl

answer #1 is correct

Answer / amedela chandra sekhar

If you are using groupby the integration service produces
one row for each group, if you do not use groupby the
integration service returns one row(last row) for all input
rows.







chandumba2005@gmail.com

Answer / srikanth nallapati

if we are not using group by also u get the result from agg
traceformation but u get only one one total column result

Ex:deptno sal
10 1000
20 3000
30 4000
10 5000
in aggr trance i am not use group by but i create one new
column like sum_of_sal here logic implementation is sum(sal)
this sum sal is linked with target table then u get result
as like above description.... if u try to send more then
one column from this aggre tranc means it's fail..

i think it's work....

Answer / public

understand question
why we r using aggregator with out using groupby?

Answer / naresharavetis

if u use aggregator t/r without using group by function u
get one summirized result but group by option allows u get
deatil result.
for example .without using groupby u want see a releince
store sales .u will get sales of whole store but when uuse
group by u get imtemized sales result
storecode itemname sales
101 vegetable 500
101 vegetables 700
101 electronics 5000
101 electronics 10000
101 cooldrinks 200
101 cooldrinks 500

result without groupby: store sales:17400
result with groupby: vegetables sales :1200
electronics sales: 15000
cooldrinks sales: 700

Answer / neeraj

By default aggregator does group by on each of the input
port so if 50 distinct rows are coming all will pass
through it..

Describe data concatenation?

0 Answers  

my source is like this id,name sal 10 abc 1000,10 pqr 2000, 10 xyz 3000 ,10 jkl 4000 and my requirement is like this 10 abc,pqr,xyz,jkl 2000 .... i have try for this by using expression transformatin its ok of the concatenation of second column but the thing is that on third column if u group by using agg t/r the last value will com i.e 4000 but i asked by a interviewer that i dont want the first or last column i want the middle column i.e 2000 .plz reply for the same

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