hive anti用法
·
left anti join
a left anti join b :在查询过程中,剔除a表中和b表有交集的部分。
select a.col
from a
left anti join b
on a.col= b.col;
相当于
select a.col
from a
left anti join b
on a.col= b.col;
where b.col is null;
demo
select
a.col,b.col
from
(
Select explode (array(1,2,3,4,5)) AS col
) a
left anti join
(
Select explode (array(1,2,3)) AS col
) b
on a.col=b.col
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