Strange T-SQL if statement behavior

Question

I have the following T-SQL if statement:

if @changeType = 'ChangeFrom'
 begin
  print 'yep'
 end
else
 begin
  print 'nope'
 end

If @changeType = 'ChangeFrom', I get yep. If @changeType = 'ChangeTo', I get nope. If @changeType ='ChangeFromfsjkfh', I get yep! What is happening there?

Answer 1

How long did you declare the variable @ChangeType as ... it looks like it is truncated?