How to replace first and last character of column in sql server?

Question

I have a database column and its give a string like ,Recovery, Pump Exchange,.

I want remove first and last comma from string.

Expected Result :

Answer 1

This is an old post but I've decided to add my solution as it will remove the first and last commas of a comma separated string without removing the other commas and also will work with strings that don't start with a comma:

DECLARE @words VARCHAR(50) = ',Recovery, Pump Exchange,'
SELECT REPLACE(SUBSTRING(@words , 1, 1),',','') + SUBSTRING(@words, 2, LEN(@words)-2) + REPLACE(SUBSTRING(@words, LEN(@words), 1), ',', '')