Ken Johanson <pg-user@kensystem.com> writes:
> Tom Lane wrote:
>> Hm, good point, so really we ought to have a separate casting path for
>> numeric types to char(n). However, this section still doesn't offer
>> any support for the OP's desire to auto-size the result; it says
>> that you get an error if the result doesn't fit in the declared
>> length:
>>
>>> iv) Otherwise, an exception condition is raised: data exception-
>>> string data, right truncation.
> I don't believe the size is being declared in the OP's (subject line)
> example: SELECT CAST(123 AS char)
No, because section 6.1 still defines what "char" means, and it says
that means "char(1)".
regards, tom lane
