mysql先排序后联合不成功问题解决方案

下面是按照天数，把每天分数分别排序

SELECT * FROM
(SELECT * FROM baby_score_all  WHERE `day`=20201116 ORDER BY score DESC limit 0, 1000) t1
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201115 ORDER BY score DESC limit 0, 1000) t2
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201114 ORDER BY score DESC limit 0, 1000) t3
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201113 ORDER BY score DESC limit 0, 1000) t4
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201112 ORDER BY score DESC limit 0, 1000) t5
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201111 ORDER BY score DESC limit 0, 1000) t6
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201110 ORDER BY score DESC limit 0, 1000) t7
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201109 ORDER BY score DESC limit 0, 1000) t8
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201108 ORDER BY score DESC limit 0, 1000) t9
UNION 
SELECT * FROM
(SELECT * FROM baby_score_all WHERE `day`=20201107 ORDER BY score DESC limit 0, 1000) t10