AQE can change bhj to smj if no extra shuffle introduce

create table t1 as select 1 c1, 2 c2;
create table t2 as select 1 c1, 2 c2;
create table t3 as select 1 c1, 2 c2;

set spark.sql.adaptive.autoBroadcastJoinThreshold=-1;

select /*+ merge(t3) */ * from t1
left join (
select c1 as c from t3
) t3 on t1.c1 = t3.c
left join (
select /*+ repartition(c1) */ c1 from t2
) t2 on t1.c1 = t2.c1;