Question { TCS, 15287 }

how the informatica server sorts the strings values in rank
transformations?

Answer

When the Integration Service runs in the ASCII data
movement mode, it sorts session data using a binary sort
order.
When the Integration Service runs in Unicode data movement
mode, the Integration Service uses the sort order
configured for the session. You select the session sort
order in the session properties. The session properties
lists all available sort orders based on the code page used
by the Integration Service.
For example, you have a Rank transformation configured to
return the top three values of a string port. When you
configure the workflow, you select the Integration Service
on which you want the workflow to run. The session
properties display all sort orders associated with the code
page of the selected Integration Service, such as French,
German, and Binary. If you configure the session to use a
binary sort order, the Integration Service calculates the
binary value of each string, and returns the three rows
with the highest binary values for the string.