How to load the data into target table, which not have
Primary/Surrogate key (Duplicate records not acceptable)
Answers were Sorted based on User's Feedback
Answer / babu
u can write the filter condition in filter t/r.
in aggregator t/r select all ports are group by and add one
out put port,that is out--count(*),
in filter t/r u cam place the condition is out=1;
mapping:
src->sq->agg(t/r)->filtr or router t/r->trg
Is This Answer Correct ? | 4 Yes | 0 No |
Answer / ramesh
this can achieved using Update statergy
we have option in UPD or Target update override
Is This Answer Correct ? | 3 Yes | 1 No |
Answer / santosh kumar sarangi
1. If source is relational then in SQ you can check the
distinct or in mapping we can use distinct in sorter t/r.
2.if flat file then distinct in sorter t/r.
It will not allow nay duplicate data, so target will get
only distinct data.
Let me know if any thing wrong.
Thanks & regards
Santosh Kumar Sarangi
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / upendra
sq--> srtr-->aggr-->tgt
note:
srtr->properties->
select distinct and connect to aggr tr
aggr-->group by key column
aggr->properties->select sorted input
and connect to tgt
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / moorthy g [ibm]
1. Target Update Override
2. Select Unique Value (means)
Exp:
out_flag: decode( true, pre_no=no, 'Y', 'N')
pre_no = no
Router:
Out_flag: Y --- Unique Value
Default --- Duplicate Value
Is This Answer Correct ? | 0 Yes | 1 No |
How to transform normalized data to denormalized form in informatica? Is there any logic or any transformations to achieve this?
Suppose on 1st Nov 2010 you had created a mapping which includes huge aggregator calculations and it is under process for next two days. You will notice that even on 3rd day also its still calculating. So without changing a logic or changing a mapping How will you troubleshot or to run that mapping? Explain the steps
What do you understand by term role-playing dimension?
Load data to multiple targets according date. When First time session runs it should send to 1st target,second time session runs then send to 2nd target and goes on how to achieve it
What is confirmed dimension and fact?
source table have 3 records? and it is sucessfully loaded into target. and 4more records is added in to source .that means 7 records now in source. we have to load the remaining 4 records into the same trgt table with maintian top 3 records. how ?can any one give me the data flow of this logic plz?
what is DSS?
Hi ETL gurus can any one tell me with a flow how to implement SCD Type 1 and SCD Type 2 in a single mapping.For some fields SCD type has to be implemented and for some fields scd type has to be implementd..Thank in advance..please let me know in case of any concerns...
what is the purpose of surrogate key and diff between primary key&surrogate key
What are the modules in Power Center
CANNOT USE PARAMETER FILE! Hi all, I am trying to use parameter file for my workflow. This could help me to filter records where CITY = 'Portland' Following is what I have done: **in Designer - create new parameter : $$PARA_FIL, Parameter, String, IsExprVar=TRUE, Initial value = [empty] - Source Qualifier/ Properties/Source Filter: CUSTOMERS.CITY='$$PARA_FIL' **Create Parameter file: C:\Informatica\PowerCenter8.6.0 \server\infa_shared\BWParam\DynamicParamTest.txt $$PARA_FIL='Portland' **Configure workflow to use the parameter file: Edit Workflow/Properties/Parameter Filename: C:\Informatica\PowerCenter8.6.0 \server\infa_shared\BWParam\DynamicParamTest.txt I also configured directory of parameter file for session task. However, I just got this in the session log: [SQ_CUSTOMERS] SQL Query [SELECT CUSTOMERS.CUSTOMER_ID FROM CUSTOMERS WHERE CUSTOMERS.CITY='$$PARA_FIL'] No record has been loaded to target. It seems that the parameter file has not been read. I cannot understand the reason why. Could any of you kindly suggest me anything? Thanks
What if i will group by with some port in aggregator and will not pass the sorted values. Will the session fails tell in both cases ( if i have configured it for sorted input and if i have not configured it for sorted input).