insert into parted_conflict_1 values (40, 'cuarenta')

on conflict (a) do update set b = excluded.b;

ERROR: there is no unique or exclusion constraint matching the ON CONFLICT specification

drop table parted_conflict;

-- test whole-row Vars in ON CONFLICT expressions

create table parted_conflict (a int, b text, c int) partition by range (a);

create table parted_conflict_1 (drp text, c int, a int, b text);

alter table parted_conflict_1 drop column drp;

create unique index on parted_conflict (a, b);

alter table parted_conflictadd c int;

alter table parted_conflictattach partition parted_conflict_1 for values from (0) to (1000);

truncate parted_conflict;

insert into parted_conflict values (50, 'cincuenta', 1);

insert into parted_conflict values (50, 'cincuenta', 2)