in performance wise union is past,union all is past
Answers were Sorted based on User's Feedback
Answer / aparna
Performance wise Union All is faster , because Union removes the duplicate records.
| Is This Answer Correct ? | 0 Yes | 0 No |
Explain about the concept of mapping parameters and variables ?
Explain the features of connected and unconnected lookup.
How to fasten loading of 100 million distinct records in informatica? (Initially they are loaded into target without using any transformation, taking 2 hours)
how to run the batch using pmcmd command
How do you recover rows from a failed session
how to improve performence by using sorted input in aggrigator t/r.
i having mapping emp---> sq_emp--->target using this mapping i have to load dept table values into target... (condition assume there is no primary and foreign key relation between emp(table x) and dept (table Y))
what are the row and column separations in Flat Files
Why update strategy and union transformations are active?
What are your source in project and how you import in informatica? How can i explain abt this?
1 Answers Accenture, Unisoft Infotech,
can we override a native sql query within informatica? Where do we do it?
how the data will be loaded while desiging the schema?which one first (for e.g.-dimesions and facts)