I have table like this :

In that order_address field is there.
In that I have stored details of buyer / user i.e. Name + address + City + Pin /Zip Code + State + Country + mobile.
Between All that I have used sep as separator of each one.
Now I want to replace all sep with some other character in whole table.
Suppose I want to replace sep with // in whole table.
So how to do that using query? I don't know about it so any suggestion for that.
 
     
     
     
    