Hive基础(四十一)：Hive 实战（二）业务分析

SELECT 
 videoId,
 views
FROM 
 gulivideo_orc
ORDER BY 
 views DESC
LIMIT 10;

SELECT 
 t1.category_name , 
 COUNT(t1.videoId) hot
FROM 
(
SELECT 
 videoId, 
 category_name 
FROM 
 gulivideo_orc 
lateral VIEW explode(category) gulivideo_orc_tmp AS category_name
) t1
GROUP BY 
 t1.category_name 
ORDER BY
 hot 
DESC 
LIMIT 10

SELECT
 t2.category_name,
 COUNT(t2.videoId) video_sum
FROM 
(
SELECT
 t1.videoId,
 category_name
FROM 
(
SELECT 
 videoId, 
 views ,
 category 
FROM 
 gulivideo_orc
ORDER BY 
 views 
DESC 
LIMIT 20 
) t1
lateral VIEW explode(t1.category) t1_tmp AS category_name
) t2
GROUP BY t2.category_name

SELECT
 t6.category_name,
 t6.video_sum,
 rank() over(ORDER BY t6.video_sum DESC ) rk
FROM
(
SELECT
 t5.category_name,
 COUNT(t5.relatedid_id) video_sum
FROM
(
SELECT
 t4.relatedid_id,
 category_name
FROM
(
SELECT 
 t2.relatedid_id ,
 t3.category 
FROM 
(
SELECT 
 relatedid_id
FROM 
(
SELECT 
 videoId, 
 views,
 relatedid 
FROM 
 gulivideo_orc
ORDER BY
 views 
DESC 
LIMIT 50
)t1
lateral VIEW explode(t1.relatedid) t1_tmp AS relatedid_id
)t2 
JOIN 
 gulivideo_orc t3 
ON 
t2.relatedid_id = t3.videoId 
) t4 
lateral VIEW explode(t4.category) t4_tmp AS category_name
) t5
GROUP BY
 t5.category_name
ORDER BY 
 video_sum
DESC 
) t6

SELECT 
 t1.videoId, 
 t1.views,
 t1.category_name
FROM 
(
SELECT
 videoId,
 views,
 category_name
FROM gulivideo_orc
lateral VIEW explode(category) gulivideo_orc_tmp AS category_name
)t1 
WHERE 
 t1.category_name = "Music" 
ORDER BY 
 t1.views 
DESC 
LIMIT 10

SELECT 
 t2.videoId,
 t2.views,
 t2.category_name,
 t2.rk
FROM 
(
SELECT 
 t1.videoId,
 t1.views,
 t1.category_name,
 rank() over(PARTITION BY t1.category_name ORDER BY t1.views DESC ) rk
FROM 
(
SELECT
 videoId,
 views,
 category_name
FROM gulivideo_orc
lateral VIEW explode(category) gulivideo_orc_tmp AS category_name
)t1
)t2
WHERE t2.rk <=10

SELECT 
 t2.videoId,
 t2.views,
 t2.uploader
FROM
(
SELECT 
 uploader,
 videos
FROM gulivideo_user_orc 
ORDER BY 
 videos
DESC
LIMIT 10 
) t1
JOIN gulivideo_orc t2 
ON t1.uploader = t2.uploader
ORDER BY 
 t2.views 
DESC
LIMIT 20