kavychki

postgres=# create function lala () returns numeric LANGUAGE plpgsql as $$ begin return 1; end;$$;
CREATE FUNCTION
postgres=# select lala();
 lala 
------
    1
(1 row)

postgres=# select "lala"();
 lala 
------
    1
(1 row)

postgres=# select public."lala"();
 lala 
------
    1
(1 row)

postgres=# create function "lala"  () returns numeric LANGUAGE plpgsql as $$ begin return 1; end;$$;
ERROR:  function "lala" already exists with same argument types