Hi
On 19.08.25 03:35, torikoshia wrote:
> Considering what the user was trying to do, it might be helpful to
> provide a similar hint in this case as well.
> I’ve attached a patch that adds such a hint.
>
> What do you think?
>
+1
I tested the patch and the error message now has the intended HINT ...
postgres=# COPY t1 TO STDOUT WHERE i > 5;
ERROR: WHERE clause not allowed with COPY TO
LINE 1: COPY t1 TO STDOUT WHERE i > 5;
^
HINT: Try the COPY (SELECT ... WHERE ...) TO variant.
... which aligns with the HINT from COPY TO from views
postgres=# COPY v1 TO STDOUT;
ERROR: cannot copy from view "v1"
HINT: Try the COPY (SELECT ...) TO variant.
Best, Jim
