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Condition to Check for NULLS and SPACES in Informatica

Scenario:

I have String data and I want to filter out NULLS and SPACES from that set of Data.
What can be the condition given in Informatica to check for NULLS and SPACES in ONE EXPRESSION OR FILTER TRANSFORMATION. 

Solution:

Use LENGTH(LTRIM(RTRIM(column_name)))<>0 in filter transformation.

OR

IIF(ISNULL(column_name) or LTRIM(RTRIM(column_name)) = '', 0, 1) -- do this in exp t/n and use this flag in filte.


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