CREATE EXTERNAL TABLE old_events
(day STRING, foo STRING, count STRING, internal_id STRING)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY '\t'
LOCATION '${INPUT}';;

CREATE EXTERNAL TABLE events
(internal_id, foo STRING, count STRING)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY '\t'
LOCATION '${OUTPUT}';;

INSERT OVERWRITE TABLE events
SELECT internal_id, e2.foo, count(e1.foo)
FROM old_events e2
LEFT OUTER JOIN old_events e1
ON e1.foo = e2.foo
WHERE e1.event = 'event1'
AND e2.event = 'event2'
GROUP BY e2.foo;

我得到以下错误，如果internal\u id是select子句的一部分失败：语义分析错误：行5:8表达式不在group by key internal\u id中
为了避免这种情况，我将internal\u id添加到groupby列中，并导致以下错误。失败：语义分析出错：在多个表/子查询中找到列内部\u id
我该如何度过这个问题？