Answer / kalpana

joiner doesnt support nonequi joins where as lookup support
nonequijoin

Answer / amit

joiner is active transformation & lookup is passive
transformation

Answer / chandra

Joiner will join the two different data sources based on a
join condition ,and pass only the rows which satisfy that
condition.discards the remaining rows.

Joiner transformation supports 4 types of joins at
Informatica level
Normal
Master Outer
Detail Outer
Full Outer

LookUp Transformation

Lookup transformation basically for Reference,based on the
lookup condition.when u want some data based on target
data ,will take lookup on that particular table and
retrieve the corresponding fields from that table.
we can override the lookup transformation using the SQL
query.

Answer / gopal

In joiner we can join two heterogeneous sources for entire
records based on a condition.

But in look up only the first value or last value of the
records will be passed if more records matched with that
condition. So only one value will be returned to the
transformation.
EX:
in source : No Name
1 -
Look up table: No Name
1 A
1 B
1 C

Now we can return only A or C in look up.
If we need entire values we must go for joiner. Take that
look up table as source and use joiner. No alternative
solution.

Answer / jayash

joiner transformation does not match for null values where
as lookup transformation matches for null values
joiner transformation supports only equality operator in
condition of join where as lookup transformation can support
<=,>=,=,!= in the lookup condition

Answer / sweta kedia

. I) Joiner is active transformation & lookup is passive
transformation.
II) Joiner operates on sources where as lookup operates
source as well
as target.
III)Joiner doesnt support nonequi joins whereas lookup
supports nonequi join
i.e. joiner transformation supports only equality operator
in condition of join where as lookup transformation can
support<=,>=,=,!= in the lookup condition.
IV) Lookup uses dynamic and static cache where as a joiner
doesn’t.
V) Joiner transformation does not match for null values
whereas lookup transformation matches for null values.
VI) Joiner will do left outer,right outer,normal,full outer
types of joins whereas lookup will do only left outer join.

Answer / mythili

Hi everybody,
Joiner is active transformation whereas lookup is passive
transformation.
Joiner returns only matching records whereas lookup
returns null if there is no match.
In join condition we can give only '=' operator but in
lookup condition !=,>=,<= are all possible.
Joiner will do left outer,right outer,normal,full outer
type of joins whereas lookup will do only left outer join.

Answer / bsgsr

hi, everyone.
lookup is passive whereas is joiner is active.
look up supports non equi joins ilso whereas joiner
supports only equi joins.
lookup joins on either on first value or last value.
lookup uses dynamic and static cache where as a joiner
doesnt
reach me on bsrinivas1213@gmail.com

Answer / eswar

Use the Joiner transformation to join source data from two
related heterogeneous sources residing in different
locations or file systems. You can also join data from the
same source. The Joiner transformation joins sources
with at least one matching column. The Joiner
transformation uses a condition that matches one or more
pairs of columns between the two sources.

Use a Lookup transformation in a mapping to look up data in
a flat file, relational table, view, or synonym.The
Integration Service queries the lookup source based on the
lookup ports in the transformation and a lookup condition.
The Lookup transformation returns the result of the lookup
to the target or another transformation.

The Joiner transformation supports only equi joins and
Lookup Transformation supports equi and non-equi joins

The Joiner transformation lieterally joins two columns
whereas Lookup transformation return a column based on the
condition, but it will not joint two columns.

Answer / swathi naik

I) Joiner is active transformation & lookup is passive
transformation.
II) Joiner operates on sources where as lookup operates
source as well
as target.
III)Joiner doesnt support nonequi joins whereas lookup
supports nonequi join
i.e. joiner transformation supports only equality operator
in condition of join where as lookup transformation can
support<=,>=,=,!= in the lookup condition.
IV) Lookup uses dynamic and static cache where as a joiner
doesn’t.
V) Joiner transformation does not match for null values
whereas lookup transformation matches for null values.
VI) Joiner will do left outer,right outer,normal,full outer
types of joins whereas lookup will do only left outer join.

Can anyone tell me the new features in Informatica 9 Version?

2 Answers   Syntel,

If I am having 6 flat files in data. How can you load the data at a time

2 Answers   CSC,

what is the difference between stop and abort

2 Answers  

What are the transformations that cannot be placed between the sort origin and the joiner transformation so that we do not lose the input sort order?

0 Answers  

Hi all, Can you please send me the Dimensions and fact tables which are used in mutual fund project. and please send me the brief summary about the project. Please do the needful.

0 Answers  

what is tha tracesing level? and difference betweentrace in normal and verbose and nonverbose?

2 Answers  

how can u connect client to ur informatica sever iff server is located at different place( not local to the client)

3 Answers   Accenture,

Hi I have been asked several times the following questions. 1.How does one do incremnental loading 2.Scenario - You are trying to load reasonable amount of rows into the target table, and its taking a helluva lot of time.What could be the reasons? I hate to answer these tw0 , gives me nightmares to even think of it!!! 3.Tell me any complex situation you have faced( as an Informatica Developer) and how did you resolve it. 4.tell me any complex mapping that you have done. All the experienced people out there , please please, reply to these questions.

2 Answers  

HOW TO YOU LOAD TIME DIMENSION

1 Answers  

If there are 3 workflows are running and if 1st workflow fails then how could we start 2nd workflow or if 2nd workflow fails how could we start 3rd workflow?

4 Answers   TCS,

in source one table is there. id value --- ------ 1 a 2 b 3 c 1 d 2 e 1 f in target i want id value ---- ------ 1 a,d,f 2 b,e 3 f How to implement it in informatica without using normalizer transformation?

2 Answers   IBM,

is there any way to read the ms excel datas directly into informatica?like is there any possibilities to take excel file as target?

0 Answers