Re: [GENERAL] reverse strpos?

From: A. Kretschmer <andreas.kretschmer(at)schollglas.com>
Date: Mon Nov 12 2007 - 11:19:25 EST

am Mon, dem 12.11.2007, um 10:54:53 -0500 mailte Gauthier, Dave folgendes:
> Is there a function that?ll return the position of the last occurance of a char
> in a string?
>
>
>
> For Example, in the string ?abc/def/ghi? I want the position of the 2^nd ?/?.

write a function to revert the string and use strpos().

create or replace function rev(varchar) returns varchar as $$ declare

        _temp varchar;
        _count int;
begin
        _temp := '';
        for _count in reverse length($1)..1 loop
                _temp := _temp || substring($1 from _count for 1);
        end loop;
        return _temp;

end;
$$ language plpgsql immutable;

Andreas

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Andreas Kretschmer
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Received on Mon Nov 12 11:21:17 2007