>>

index on left(chrtran(myfield,'/','') + ' ',25)

>
>Almost there, but missing a cherry on top:
>
>

index on padr(chrtran(myfield,'/',''),25)

>
>>Replace 25 with the actual length of your field.
>
>There.

Right. To be honest, I had a bad moment when I simply forgot about padr(). I bumped my head into the desk a few times, but just couldn't remember the name of that function. I remembered later, and thought about changing my message. However, you beat me.