Replace, TRIM keywords doesnt work in DSU

Summary:

Keywords like Replace, TRIM, REGEX_REPLACE doesnt work in DSU

Content (please ensure you mask any confidential information):

We are receiving white spaces in flex fields from External system. We are trying to Trim the space by using above keywords.

When we execute the query it works fine via Servlet. But the same doesnt work when we try to update via DSU in Automation agent.

Is this a Bug or does it not support in Update statement?

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):

select attribute16,replace(attribute16,' ','') from shipment where shipment_xid='ABCD'