Remove all spaces from a string in SQL Server

Question

What is the best way to remove all spaces from a string in SQL Server 2008?

LTRIM(RTRIM(\' a b \')) would remove all spaces at the right and left of th

Answer 1

To make all of the answers above complete, there are additional posts on StackOverflow on how to deal with ALL whitespace characters (see https://en.wikipedia.org/wiki/Whitespace_character for a full list of these characters):

• TSQL 2008 Using LTrim(RTrim and still have spaces in the data
• How do I remove non-breaking spaces from a column in SQL server?
• What's a good way to trim all whitespace characters from a string in T-SQL without UDF and without CLR?