Table of Contents
What is pre SQL and post SQL in Informatica?
As per my knowledge pre SQL means ” SQL statement executed using the source connection,before a pipeline is run” and post SQL means ” SQL statement executed using the source connection,after a pipeline is run”.
What is pre Session command in Informatica?
You can use pre-session and post-session SQL or shell commands in a workflow that you want to use in a PowerCenter task. You might use a pre-session or post-session command to start FTP/SFTP scripts or stored procedures, rename or archive files, or run post-processing commands.
Can multiple SQL queries be executed on the post SQL statement in the PowerCenter session?
No, multiple SQL queries cannot be executed on the Pre SQL statement in the PowerCenter session. The designed behavior of PowerCenter is such that it can handle only one query in the PowerCenter Pre SQL command.
What is source qualifier transformation in Informatica?
The source qualifier transformation converts the source data types in the Informatica native data types. That’s why there is no need to alter the data types of the ports. The source qualifier transformation does the following tasks, such as: Joins: We can join two or more tables from the same source database.
What are the different tracing levels in Informatica?
Tracing levels types in Informatica
- Taleo transition for a multinational athletic apparel retailer.
- Taleo transition for a healthcare services company.
- Taleo transition for British Multinational Information and Analytics provider.
- Taleo transition for a Global financial company.
How do I find previous session logs in Informatica?
To get the workflow log for the workflow, right-click on the workflow in the navigator and select Get Workflow Log. To get the session log for the workflow, right-click on the session task in the navigator and select Get Session Log. Get Learning Informatica PowerCenter 9.
What is the difference between source qualifier and filter transformation?
By using Source Qualifier we can filter out records from only relational sources. But by using Filter Transformation we can filter out records from any sources.In Filter Transformation we can use any expression to prepare filter condition which evaluates to TRUE or FALSE. The same cannot be done using Source Qualifier.
What is SQL override in Informatica?
SQL Override in Informatica We have an option to customize the default query provided by the transformations and enter custom SQL query by using SQL override. The most common transformations which support the SQL overrides are Source Qualifier & Lookup transformations.
What is difference between lookup and joiner transformation in Informatica?
Joiner is used for joining two homogeneous or heterogeneous sources residing at different locations. Lookup is used to look-up the data. Joiner is an Active Transformation. Lookup transformation is a Passive transformation.
How to validate Informatica pre SQL and POST SQL sessions?
There are two types of sessions in Informatica: For this Informatica Pre SQL and Post SQL example, we created a Non-reusable Session and named it as s_Pre_and_Post_SQL for the session. Please link the Start Task, and the Session Task. Next, navigate to Workflows Menu and select the Validate option to validate the Workflow.
How do I use pre-session and post-session SQL?
You might want to use pre-session SQL to write a timestamp row to the source table when a session begins. The Integration Service runs pre-session SQL commands against the source database before it reads the source. It runs post-session SQL commands against the source database after it writes to the target.
What are the pre and post-mapping SQL commands in the data integration service?
When you run the mapping, the Data Integration Service runs pre-mapping SQL commands against the source database before it reads the source. It runs post-mapping SQL commands against the source database after it writes to the target. Use any command that is valid for the database type.
What are the different types of sessions in Informatica?
There are two types of sessions in Informatica: For this Informatica Pre SQL and Post SQL example, we created a Non-reusable Session and named it as s_Pre_and_Post_SQL for the session. Please link the Start Task, and the Session Task.