The following bug has been logged on the website:
Bug reference: 8385
Logged by: Alessio
Email address: kolmyk(at)hotmail(dot)com
PostgreSQL version: 9.2.3
Operating system: Windows 8
Description:
create or replace function α(β int, ξ int, μ float) returns float as $$
select (β + ξ) * μ $$ language sql;
select α(1, 2, 0.1);
-- it works
select ascii(proname), * from pg_proc where length(proname) = 1;
-- return code 60536 although select ascii('α') retruns 945
select * from pg_proc where proname = 'α';
-- returns nothing