consider sql select * from (select * from test_1) a inner join (select * from test_2) b on a.id = b.id inner join (select * from test_3) c on a.id = c.id Because a.id is from a subquery, to find its source table, need use function getSrcSlotRef().
consider sql select * from (select * from test_1) a inner join (select * from test_2) b on a.id = b.id inner join (select * from test_3) c on a.id = c.id Because a.id is from a subquery, to find its source table, need use function getSrcSlotRef().