T-SQL trim (and other non-alphanumeric characters)

Question

We have some input data that sometimes appears with   characters on the end.

The data comes in from the source system as varchar() and our attempts to cast a

Answer 1

This page has a sample of how you can remove non-alphanumeric chars:

-- Put something like this into a user function:
DECLARE @cString    VARCHAR(32)
DECLARE @nPos    INTEGER
SELECT  @cString = '90$%45623 *6%}~:@'
SELECT  @nPos = PATINDEX('%[^0-9]%', @cString)

WHILE @nPos > 0
BEGIN
SELECT @cString = STUFF(@cString, @nPos, 1, '')
SELECT  @nPos = PATINDEX('%[^0-9]%', @cString)
END

SELECT @cString