带有hiveql重新调整NullPointerException null

Question

我正在尝试在蜂巢中运行一个查询，该查询涉及在同一张表中内联2个数组，并使用NOT IN运算符有效地吸收差异

select c1 from t1 
lateral view inline(m1) m1
where m1.key = 'x'
AND t1.c1 NOT IN
(
select c1 from t1
lateral view inline(m2) m2
where m2.key = 'y'
);

以上查询返回

FAILED: NullPointerException null

Answer 1

首先过滤出所有具有值'y'的c1

With temp as
(select distinct c1 from t1
lateral view inline(m2) m2
where m2.key = 'y') 

select c1 from t1 
lateral view inline(m1) m1
where m1.key = 'x')
and c1 not in (select c1 from temp)