wendy we need some examples, i think;
splitting the name based on some character is easy; PARSENAME or the famous DelimitedSplit8K are two examples that come to mind;
but unless there is a naming convention, ie the first x segments constitute the company name, i don't know what i can offer.
SELECT 'wendy-elizabeth-inc-2013-01-04.txt' UNION ALL
SELECT 'lowell_Corporation.txt' UNION ALL
CROSS APPLY dbo.DelimitedSplit8K(REPLACE(filename,'_','-'),'-') myfn
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