Answer / venkateshmalneni

How to generate sequence numbers in informatica with out using sequence generator t/r

we can generate sequence numbers in informatica by using expression transformation also.In expressin t/r create 3 new ports
1)var_1 as variable port and in expression give value as val
2)val as variable port and in expression give value as val+1
3)sequence output port and in expression give val
and connect the output port to target

Answer / venkateshmalneni

i have number of records in my sourse, but iwant to
display first and last record only. how it is possible in
informatica.

Generate sequence numbers to ur source
connect it to filter t/r and write a condition sno=1 connect it to the target

in second pipeline connect source qualifier to aggreator t/r don't select any group by (so that it will gives it last record) connect output to the target

the flow is like this
sequence generator|
|
\|/
src--->sq--->filter--->target
|
|--->aggrigator--->target

Answer / rakesh

We can generate using MAPPING VARIABLE with SETCOUNTVARIABLE() function

Answer / kishore

2)i have number of records in my sourse, but iwant to
display first and last record only. how it is possible in
informatica.

ans:yes we get first and last record from table using
psuedo columns rownum and row id
i.e.,
in source qualifier t/r we caen create user defined queires
their type below query
select * from <table_name> where rownum=1 union select *
from <table_name> where rowid=(select max(rowid) from
<table_name>);
note:<table_name> is the name of the from which u want to
retrieve records

Answer / chandrasekar

HI VENKATESH,

YOUR ABOVE ANSWER IS NOT CORRECTLY WORKING IN MY
SYSTEM. SO PLEASE EXECUTE THE ABOVE SOLUTION ONCE AGAIN LOAD
IT. AS PER MY KNOWLEDGE WE CAN CREATE A MAPPING VARIABLE AS
$$SEQ,DATA TYPE IS INTEGER AND SELECT AGGREGATION COLOUMN IS
COUNT. USING EXP TRANSFORMATION SETCOUNTVARIABLE($$SEQ). IT
WILL WORK CORRECTLY.

what is upstream and downstream transformation?

7 Answers  

hi,there is a scenario like. there are three columns empid,salmonth, sal contains the values 101,jan,1000 101 feb 1000 like twelve rows are there then my required out put is like contains 13 columns empid jan feb marc.......dec and the velues are 101 1000 1000 1000 like this . thank you

5 Answers   Patni,

Hi, As shown below i have repositories under that some folder are there . Between these repositories and folder some thing is there.I want to know what is that? repositories repo1 repo2 repo3 IS_## IS_## IS_## Folder1 Folder2 Folder3 - - - Here i want to what IS_## represents ? Advance Thanks

1 Answers   IBM,

In dimension and fact table? which one holds big data?

2 Answers  

Source (Flatfile) - Target (1-1 mapping). How to load first or last 20 record to target?

5 Answers   Flextronics,

what are 3 tech challenges/ common issues you face?

0 Answers   TCS,

If I have a index defined on target table and if set it to bulk load will it work ?

4 Answers   IBM,

What is constraint based loading exatly? And how to do this? I think it is when we have primary key-foreign key relation ship. Is it correct? please answer me. Advance Thanks.

4 Answers  

Want to know about Training Centres for Informatica, Cognos and ETL Softwares in Mumbai, India.

27 Answers  

Difference between Data and Index Caches?

0 Answers   Informatica,

scenario

1 Answers  

After draging the ports of three sources(sql server,oracle,informix) to a single source qualifier, can you map these three ports directly to target?

6 Answers