Re: Virtual generated columns

On 11.11.24 12:37, jian he wrote:
> On Wed, Nov 6, 2024 at 12:17 AM Peter Eisentraut <peter@eisentraut.org> wrote:
>>
>> New patch version.  I've gone through the whole thread again and looked
>> at all the feedback and various bug reports and test cases and made sure
>> they are all addressed in the latest patch version.  (I'll send some
>> separate messages to respond to some individual messages, but I'm
>> keeping the latest patch here.)
> 
> just quickly note the not good error message before you rebase.
> 
> src7=# create domain d_fail as int4 constraint cc GENERATED ALWAYS AS (2) ;
> ERROR:  unrecognized constraint subtype: 4
> src7=# create domain d_fail as int4 constraint cc GENERATED ALWAYS AS
> (2) stored;
> ERROR:  unrecognized constraint subtype: 4
> src7=# create domain d_fail as int4 constraint cc GENERATED ALWAYS AS
> (2) virtual;
> ERROR:  unrecognized constraint subtype: 4
> 
> reading gram.y, typedef struct Constraint seems cannot distinguish, we
> are creating a domain or create table.
> I cannot found a way to error out in gram.y.
> 
> so we have to error out at DefineDomain.

This appears to be a very old problem independent of this patch.  I'll 
take a look at fixing it.