您可以在子查询中为所需范围生成日期（请参见 date_range 子查询）和 left join 把它和你的table放在一起。如果在某些日期的表中没有记录，则该值将为空，并且日期将从 date_range 没有间隙的子查询。套 start_date 以及 end_date 所需日期范围的参数：

set hivevar:start_date=2016-04-23; --replace with your start_date
set hivevar:end_date=current_date; --replace with your end_date

set hive.exec.parallel=true;
set hive.auto.convert.join=true; --this enables map-join
set hive.mapjoin.smalltable.filesize=25000000; --size of table to fit in memory

with date_range as 
(--this query generates date range, check it's output
select date_add ('${hivevar:start_date}',s.i) as dt 
  from ( select posexplode(split(space(datediff('${hivevar:end_date}','${hivevar:start_date}')),' ')) as (i,x) ) s
) 

select d.dt as date,
       t.your_col --some value from your table on date
  from date_range d 
       left join table1 t on d.dt=t.date 
order by d.dt --order by dates if necessary