Re: 0/1 vs true/false

Franco Bruno Borghesi <franco@akyasociados.com.ar> writes:
> This makes me wonder, what about 't' and 'f'?... will they disappear in
> newer versions of postgreSQL?

No.  See my comment about I/O representations being outside the spec.
There is no inconsistency in the following examples:

regression=# select true;
 bool
------
 t
(1 row)

regression=# select t;
ERROR:  attribute "t" not found
regression=# select 't'::boolean;
 bool
------
 t
(1 row)

regression=# select '1'::boolean;
 bool
------
 t
(1 row)


            regards, tom lane