Re: COMMENTS are not being copied in CREATE TABLE LIKE

On Fri, Feb 13, 2026 at 12:34 AM Jim Jones <jim(dot)jones(at)uni-muenster(dot)de> wrote:
>
>
>
> On 12/02/2026 16:08, Fujii Masao wrote:
> > On Thu, Feb 12, 2026 at 11:36 PM Matheus Alcantara
> > <matheusssilv97(at)gmail(dot)com> wrote:
> >> The patch fix the issue and it seems correct to me.
>
> Thanks for the review!
>
> > The documentation [1] states that INCLUDING COMMENTS copies comments for
> > the copied columns, constraints, and indexes. It does not mention copying
> > comments on the table itself. Therefore, not copying table comments with
> > INCLUDING COMMENTS does not appear to be a bug. That is, the proposed patch
> > seems more like an improvement than a bug fix.
>
> Hmm, it seemed so obvious to me that I didn’t look more closely at the
> documentation :) Although I struggle to see the rationale for not
> copying a table’s comment in a CREATE TABLE LIKE ... INCLUDING COMMENTS
> statement, I have to agree that the documentation is quite clear about
> this limitation, and therefore it cannot really be considered a bug.
> That said, it may well be worth considering for a future release.
>
> What are your thoughts?

At first, I felt it would be more intuitive to copy the table comment as well.
However, on second thought, since LIKE can reference multiple tables,
copying table-level properties such as comments may not be well-defined.

For example, if two source tables each have a table comment and both are
specified in LIKE, which comment should be applied to the new table?

Regards,

--
Fujii Masao