Re: bug: UPDATE FOR PORTION OF interact with updatable view

On Sun, Apr 12, 2026 at 8:12 AM jian he <jian.universality@gmail.com> wrote:
>
> CREATE TABLE base_tbl (a int, b int, c int);
> INSERT INTO base_tbl values(1,2);
> CREATE VIEW rw_view15 AS SELECT a, ('[' || abs(b) ||
> ',20]')::int4range as b FROM base_tbl;
>
> UPDATE rw_view15 for portion of b from 1 to 10 set a = 2;
> DELETE FROM rw_view15 for portion of b from 1 to 10;
>
> The UPDATE will result
> ERROR:  attribute number 2 not found in view targetlist
>
> \errverbose
> ERROR:  XX000: attribute number 2 not found in view targetlist
> LOCATION:  rewriteTargetView, rewriteHandler.c:3779
>
> The DELETE will crash the server.
>
> Both should result in an error in rewriteTargetView.
> for UPDATE, the error message:
> ERROR:  cannot update column "b" of view "rw_view15"
> DETAIL:  View columns that are not columns of their base relation are
> not updatable.
>
> for DELETE, the error message:
> ERROR:  DELETE ... FOR PORTION OF is not supported for column "b" on
> view "rw_view15"
> DETAIL:  View columns that are not columns of their base relation are
> not updatable.

Thanks! I've attached a fix. I rewrote the DELETE error message a bit
to match the existing errors in the file more closely.

I'll make a CF entry.

Yours,

-- 
Paul              ~{:-)
pj@illuminatedcomputing.com