ROQL order by length function

Summary:

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Is there a ROQL equivalent to SQL's CHAR_LENGTH() function? I'm trying to write a simple query that would look something like the code snippet below, but not having any luck. I skimmed through the documentation, but couldn't find much on what functions ROQL supports. I've used length() function in Service Cloud analytics, but that does not work in ROQL object queries. Any insight would be appreciated!

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

SELECT * FROM TABLE ORDER BY CHAR_LENGTH(FIELDNAME);