CURRENT_USER

Hi

I tried to define a table on my Linux box, PostgreSQL 6.3 as:

java=> CREATE TABLE tabella(campo VARCHAR(30) DEFAULT CURRENT_USER);
ERROR:  DEFAULT: type mismatched

java=> CREATE TABLE tabella(campo VARCHAR(30));
CREATE
java=> insert into tabella values (CURRENT_USER);
ERROR:  parser: attribute 'campo' is of type 'varchar' but expression is of type 'name'

java=> insert into tabella values (CAST CURRENT_USER AS VARCHAR);
ERROR:  func_get_detail: function varchar(name) does not exist
java=> insert into tabella values (CURRENT_USER::VARCHAR);
ERROR:  func_get_detail: function varchar(name) does not exist

and I had this error. PostgreSQL CURRENT_USER returns a type "name",
but SQL-Standard says that niladic builtin function CURRENT_USER returns a
CHARACTER string representing the current authorization ID and "name" isn't
an SQL type. I think this is a bug. What do you think about?

(see A Guide To The SQL Standard C.J.Date).

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