create extension if not exists jsquery;
drop table if exists contained_test;
create table contained_test (data jsonb);
insert into contained_test values ('{"id": 1}'), ('{"id": 2}');
select * from contained_test where data @@ 'id IN (1, 2)'::jsquery; -- works, returning both records
select * from contained_test where data @@ 'id <@ [1, 2]'::jsquery; -- does not work, returning 0 rows