hive报错 ParseException line 10:7 missing EOF at 'by' near 'group'

HIVE查询：

SELECT order_cnt, COUNT(user_id), COUNT(DISTINCT user_id)
FROM (
    SELECT *
    FROM daojia_ml.sy_codesubsidy_discount_info
    WHERE dt = '2018-09-03'
)
GROUP BY order_cnt;

报错：FAILED: ParseException line 10:7 missing EOF at 'by' near 'group'

原因：hive本身缺陷，需要在每个子查询后面加别名。

 

SELECT order_cnt, COUNT(user_id), COUNT(DISTINCT user_id)
FROM (
    SELECT *
    FROM daojia_ml.sy_codesubsidy_discount_info
    WHERE dt = '2018-09-03'
) a
GROUP BY order_cnt;