On Mon, Oct 06, 2003 at 17:35:11 +0100,
Chris Faulkner <chrisf(at)oramap(dot)com> wrote:
>
> OK - so I tried casting.
>
> template1=# update tab set new_col = "OLD_COL"::int4;
> ERROR: Cannot cast type character to integer
>
> I understand this - some tables might have characters in the varchar but how
> to get around it in my case ? I know that my character field has only
> integers in it ?
You want to use to_number to do the conversion.