Re: Validating problem in the isn contrib module

--On Freitag, März 06, 2009 02:26:12 +0100 Andreas 'ads' Scherbaum
<adsmail(at)wars-nicht(dot)de> wrote:

> test=# select is_valid('978-3-937514-69-6'::isbn13);
> ERROR: invalid check digit for ISBN number: "978-3-937514-69-6",
> should be 7 ROW 1: select is_valid('978-3-937514-69-6'::isbn13);

According to the docs, this is intended behavior. If you want to validate
those values later or yourself, you have to use the weak mode:

#= SELECT isn_weak(true);
isn_weak
----------
t

#= SELECT is_valid('978-3-937514-69-6'::isbn13);
is_valid
----------
f

#= SELECT is_valid('978-3-937514-69-7'::isbn13);
is_valid
----------
t

--
Thanks

Bernd