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

If it is an update on a table all you have to do is run this update multiple times until it is affecting 0 rows.

update tableName
set colName = REPLACE(LTRIM(RTRIM(colName)), '  ', ' ')
where colName like '%  %'