Hi all, Drill uses DRILL_JOIN_TO_MULTIJOIN_RULE (=new JoinToMultiJoinRule(DrillJoinRel.class) during planning stage. I have noticed that after using this rule, left join can be transformed into right join when right table is greater than left one. After reading JoinToMultiJoinRule java doc, I am not quite sure this rule actually does such transformation but if I disable it, my query is not transformed. Can anybody point me out where this rule applies such logic? Or suggest what can be responsible for transforming left join into right one?
Thank you in advance. Kind regards Arina
