Hive 配置单元嵌套查询左联接

Hive 配置单元嵌套查询左联接,hive,hiveql,hive-query,Hive,Hiveql,Hive Query,我是hive的新手,我想实现以下查询 select a.controlid, b.name as campaign, a.controlactivityid as activitysource, c.code as codemyaprc, c.label_en as label_en, c.label_fr as label_fr from bo_h_control.bridge

我是hive的新手,我想实现以下查询

   select a.controlid, 
          b.name as campaign, 
          a.controlactivityid as activitysource,
          c.code as  codemyaprc,
          c.label_en as label_en,
          c.label_fr as label_fr
   from bo_h_control.bridgeactivity a 
        join suvh_econtrol.TMP_GPS_REF b ON a.controlcampaignid = 
   b.ps_cam_id
        left join  srv_h_a8460_fpc.activity c 
                   ON a.controlactivityid=c.code 
                      and c.date_creation= select 
   max(date_creation) from srv_h_a8460_fpc.activity
在最后一个左连接之前,它工作正常。嵌套查询显然未在配置单元中获得授权


如何处理此问题。

使用子查询而不是联接表:

 select a.controlid, 
          b.name as campaign, 
          a.controlactivityid as activitysource,
          c.code as  codemyaprc,
          c.label_en as label_en,
          c.label_fr as label_fr
   from bo_h_control.bridgeactivity a 
        join suvh_econtrol.TMP_GPS_REF b ON a.controlcampaignid = 
   b.ps_cam_id
        left join (select c.*, max(date_creation) over() as max_date_creation
                     from srv_h_a8460_fpc.activity c 
                  ) c ON a.controlactivityid=c.code 
                         and c.date_creation=c.max_date_creation
或者最好将最后一个连接条件移动到子查询中的WHERE子句中:

 select a.controlid, 
          b.name as campaign, 
          a.controlactivityid as activitysource,
          c.code as  codemyaprc,
          c.label_en as label_en,
          c.label_fr as label_fr
   from bo_h_control.bridgeactivity a 
        join suvh_econtrol.TMP_GPS_REF b ON a.controlcampaignid = 
   b.ps_cam_id
        left join (select * from
                   (
                   select c.*, max(date_creation) over() as max_date_creation
                     from srv_h_a8460_fpc.activity c 
                   )c where max_date_creation=date_creation
                  ) c ON a.controlactivityid=c.code