extract and variables in PL/pgSQL

Hi,

Someone in another list asked about this function. I'm not sure why it
doesn't work. What am I missing?

CREATE FUNCTION zastras(timestamp) RETURNS integer AS '
declare
w_temp1 alias for $1;
w_result integer;
begin
SELECT INTO w_result EXTRACT(epoch from timestamp w_temp1);
return w_result;

end;
' language 'plpgsql';

NOTICE: Error occurred while executing PL/pgSQL function zastras
NOTICE: line 5 at select into variables

Thanks,

-Roberto

--
+----| http://fslc.usu.edu/ USU Free Software & GNU/Linux Club |------+
Roberto Mello - Computer Science, USU - http://www.brasileiro.net/
http://www.sdl.usu.edu/ - Space Dynamics Lab, Developer
I wonder what this button does? *&^(&^)#(at)$*&_% NO CARRIER