[PG][YT] INSERT INTO VALUES doesn't work without columns list

[rekby]

Reproduce in pgrun:

--!syntax_pg
create table A (id int not null primary key, val text);
insert into A values (1);
insert into A values (2, 'a');

\pset null '<null>'
select * from A;

drop table A;

The syntax works for YDB. YT query inserts nulls instead of values.