如何在MySQL数据库中的单词之前添加URL

I have table that row is

我有表那行

ID    Twitter                             Facebook                   UserID
1      @kamel                              http:www.fb.com/rtymal       10
2      http:www.twitter.com/rlyill         makmal                       170
3      ymikll                              mtymal                       15
4      @wiled                              makfrl                       13
ID    Twitte