蜂巢加入条件相同

Question

如何在蜂巢中实现左下方联接？对于以下错误，我该如何将子句移至where子句？

 Line 2:41 Both left and right aliases encountered in JOIN ''%'' (state=42000,code=10017)




 select expo.sectr_cd from tbl1 expo
    LEFT tbl2 prxy_aw ON (expo.name_cd like (prxy_aw.name_starts_with OR '%') )
    where ((expo.prd_dt BETWEEN prxy_aw.eff_dt AND prxy_aw.exp_dt) AND (pn_aw.industry_group_cd != prxy_aw.excl_ind_grp_cd)) limit 1;