How does Joiner transformation treat NULL value matching in Informatica?

How Joiner transformation works in Informatica?

Joiner transformation is an active and connected transformation. It provides the option of creating joins in the Informatica. By using the joiner transformation, the created joins are similar to the joins in databases. The joiner transformation is used to join two heterogeneous sources.

Can null values be compared in Informatica?

To check for null values in columns, you must use the ISNULL() in comparison expressions. handles null values in comparison expressions in the Lookup transformation.

Why Joiner transformation is active?

The Joiner transformation is an Active and Connected Informatica transformation used to join two heterogeneous sources. The joiner transformation joins sources based on a specified condition that matches one or more pairs of columns between the two sources.

What is the function of Joiner transformation?

The Joiner transformation can join data from two related heterogeneous sources. For example, you can use the Joiner transformation to join account information from flat files with data from the Salesforce Account object. The Joiner transformation joins data based on the join conditions and the join type.

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How can joiner transformation improve performance?

Use the following tips to improve session performance with the Joiner transformation:

  1. Designate the master source as the source with fewer duplicate key values. …
  2. Designate the master source as the source with fewer rows. …
  3. Perform joins in a database when possible. …
  4. Join sorted data when possible.

How do you handle null in Informatica?

produces a null value. To check for null values in columns, you must use the ISNULL() in comparison expressions. handles null values in comparison expressions in the Lookup transformation.

How do I filter null records in Informatica?

To filter Null values in Informatica you can use the ISNULL function. ISNULL Function will test the value for port and check if the value is null or not.

What is coalesce in Informatica?

Returns the first argument that is not null. The arguments are evaluated in the order in which they are specified. The result is null only if all the arguments are null.

Can we connect 2 active transformations in Informatica?

An active transformation can change the number of rows that pass through the transformation. … You cannot connect multiple active transformations or an active and a passive transformation to the same downstream transformation or transformation input group. You might not be able to concatenate the rows.

What is the difference between union and joiner transformation in Informatica?

A Union transformation can merge data from multiple sources but does not combine data based on a join condition or remove duplicate rows, like a Joiner transformation. … The Joiner transformation supports Normal, Right Outer, Left Outer, and Full Outer JOINs. Include multiple input groups. Yes.

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What is the difference between Joiner and Lookup transformation in Informatica?

A joiner is used to join data from different sources. lookup is used to get related values from another table or check for updates etc in the target table.