adding string to values in a column

[ketanco]

Hi,

I am trying to modify the values I entered before into a mysql table column where I had entered links only. They were links however they did not have http://www. in the beginning (I was taking care of the proper display in php display file).

From now, I want to enter links properly, so I changed the php file, without automatically adding/writing http://www. in the beginning, but this time the old values links dont work.

How can I add http://www. to the beginning of all vaules in this column?

Thanks