Hive SQL 报错

错误SQL:

select * from ((
       select main_brand_code, third_cate_code, user_pin
       from adm.adm_dm_4a_ad_fission_view_mid
       where dt = '2019-04-25'
       union all
       select main_brand_code, 999999 as third_cate_code, user_pin
       from adm.adm_dm_4a_ad_fission_view_mid
       where dt = '2019-04-25') tab1
       left join (select brand_code, third_cate_code, user_pin
                  from adm.adm_dm_4a_ad_fission_view_feature
                  where dt = '2019-04-25') tab2
                 on tab1.main_brand_code = tab2.brand_code and
                    tab1.third_cate_code = tab2.third_cate_code and tab1.user_pin = tab2.user_pin)) tab  ;

正确 SQL:

SELECT *
FROM (
	SELECT main_brand_code, third_cate_code, user_pin
	FROM adm.adm_dm_4a_ad_fission_view_mid
	WHERE dt = '2019-04-25'
	UNION ALL
	SELECT main_brand_code, 999999 AS third_cate_code, user_pin
	FROM adm.adm_dm_4a_ad_fission_view_mid
	WHERE dt = '2019-04-25'
) tab1
	LEFT JOIN (
		SELECT brand_code, third_cate_code, user_pin
		FROM adm.adm_dm_4a_ad_fission_view_feature
		WHERE dt = '2019-04-25'
	) tab2
	ON tab1.main_brand_code = tab2.brand_code
		AND tab1.third_cate_code = tab2.third_cate_code
		AND tab1.user_pin = tab2.user_pin;