On Tue, 16 Mar 2004, Thomas Leung wrote:
> I want to index my table using the year of the date. So I create the
> following function.
>
> create function to_year(date) returns varchar as '
> declare
> str varchar;
> begin
> str := to_char($1, "YYYY");
> return str;
> end;
> ' language 'plpgsql' with (iscachable, isstrict);
>
> But I face the problem as follow
> select to_year(current_date);
> WARNING: Error occurred while executing PL/pgSQL functions to_year
> WARNING: line 4 at assignment
> ERROR: Attribute "YYYY" not found
>
> Anybody can help? Thanks.
I think you're going towant doubled single quotes (''YYYY'') not double
quotes.