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String Processing (right most characters)

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Hello, I would like to know how to retrieve the rightmost n characters from a string ignoring trailing spaces.

 

Example:

 

if fieldx contains   '012345678       '

 

the RightMost 5 characters would be '45678'

the Rightmost 4 characters would be '5678'

 

How do we accomplis this in Data Services?

 

Thanks.


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