-- 更新统计数据
-- songCount 容易超时，有几张表查询时容易发生死锁，所以请在没有爬取时进行统计
-- 4G: 4294967296 (4 * 1024 * 1024 * 1024)  64M: 67108864
-- my.ini 配置文件中设置 innodb_buffer_pool_size=4G
show variables like "%innodb_buffer_pool_size%";
DELETE FROM analysis WHERE `key` LIKE '%_old';
UPDATE analysis SET `key`=concat(`key`,'_old'), modify_time=modify_time WHERE `key` NOT LIKE '%_old';
INSERT INTO analysis (`key`, `value`) VALUES ('songCount', (SELECT count(*) as count FROM song) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('songWaiting', (SELECT count(*) as count FROM wait_fetch_song) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('playlistCount', (SELECT count(*) AS count FROM playlist) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('albumCount', (SELECT count(*) as count FROM album) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('albumWaiting', (SELECT count(*) as count FROM wait_fetch_album) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('artistCount', (SELECT count(*) AS count FROM artist) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('artistWaiting', (SELECT count(*) as count FROM wait_fetch_artist) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('lyricCount', (SELECT count(*) AS count FROM lyric) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('commentCount', (SELECT count( DISTINCT song_id ) AS count FROM comment) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('commentTotalCount', (SELECT count(*) AS count FROM comment) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('userCount', (SELECT count(*) AS count FROM user) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('songPlaylistCount', (SELECT count(*) AS count FROM song_playlist_relation) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('songAlbumCount', (SELECT count(*) AS count FROM song_album_relation) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);
INSERT INTO analysis (`key`, `value`) VALUES ('songArtistCount', (SELECT count(*) AS count FROM song_artist_relation) ) ON DUPLICATE KEY UPDATE `value` = VALUES(`value`);



-- 更新后初次全表扫描
INSERT IGNORE INTO wait_check_song    (id) SELECT song_id   FROM song_artist_relation   WHERE create_time > '2022-10-28 00:00:00';
INSERT IGNORE INTO wait_check_song    (id) SELECT song_id   FROM song_album_relation    WHERE create_time > '2022-10-28 00:00:00';
INSERT IGNORE INTO wait_check_song    (id) SELECT song_id   FROM song_playlist_relation WHERE create_time > '2022-10-28 00:00:00';

INSERT IGNORE INTO wait_check_lyric   (id) SELECT song_id   FROM song_artist_relation   WHERE create_time > '2022-10-28 00:00:00';
INSERT IGNORE INTO wait_check_lyric   (id) SELECT song_id   FROM song_album_relation    WHERE create_time > '2022-10-28 00:00:00';
INSERT IGNORE INTO wait_check_lyric   (id) SELECT song_id   FROM song_playlist_relation WHERE create_time > '2022-10-28 00:00:00';
INSERT IGNORE INTO wait_check_lyric   (id) SELECT song_id   FROM song                   WHERE create_time > '2022-10-28 00:00:00';

INSERT IGNORE INTO wait_check_comment (id) SELECT song_id   FROM song_artist_relation   WHERE create_time > '2022-10-28 00:00:00';
INSERT IGNORE INTO wait_check_comment (id) SELECT song_id   FROM song_album_relation    WHERE create_time > '2022-10-28 00:00:00';
INSERT IGNORE INTO wait_check_comment (id) SELECT song_id   FROM song_playlist_relation WHERE create_time > '2022-10-28 00:00:00';
INSERT IGNORE INTO wait_check_comment (id) SELECT song_id   FROM song                   WHERE create_time > '2022-10-28 00:00:00';

INSERT IGNORE INTO wait_check_artist  (id) SELECT artist_id FROM song_artist_relation   WHERE create_time > '2022-10-28 00:00:00';

INSERT IGNORE INTO wait_check_album   (id) SELECT album_id  FROM song_album_relation    WHERE create_time > '2022-10-28 00:00:00';



-- 全量更新
INSERT IGNORE INTO wait_check_song    (id) SELECT song_id   FROM song_artist_relation   WHERE song_id   NOT IN ( SELECT song_id   FROM song             );
INSERT IGNORE INTO wait_check_song    (id) SELECT song_id   FROM song_album_relation    WHERE song_id   NOT IN ( SELECT song_id   FROM song             );
INSERT IGNORE INTO wait_check_song    (id) SELECT song_id   FROM song_playlist_relation WHERE song_id   NOT IN ( SELECT song_id   FROM song             );
INSERT IGNORE INTO wait_check_lyric   (id) SELECT song_id   FROM song                   WHERE song_id   NOT IN ( SELECT song_id   FROM lyric            );
INSERT IGNORE INTO wait_check_comment (id) SELECT song_id   FROM song                   WHERE song_id   NOT IN ( SELECT song_id   FROM comment_progress );
INSERT IGNORE INTO wait_check_artist  (id) SELECT artist_id FROM song_artist_relation   WHERE artist_id NOT IN ( SELECT artist_id FROM artist           );
INSERT IGNORE INTO wait_check_album   (id) SELECT album_id  FROM song_album_relation    WHERE album_id  NOT IN ( SELECT album_id  FROM album            );



-- 查看需要爬取的 song 的分布
SELECT cast( FLOOR( id / 10000000 ) * 10000000 as UNSIGNED ) as s, count(*) as count
FROM wait_fetch_song
GROUP BY s
ORDER BY s DESC;

-- 查看需要爬取的 album 的分布
SELECT cast( FLOOR( id / 1000000 ) * 1000000 as UNSIGNED ) as s, count(*) as count
FROM wait_fetch_album
GROUP BY s
ORDER BY s DESC;

-- 查看需要爬取的 artist 的分布
SELECT cast( FLOOR(id / 100000 ) * 100000 as UNSIGNED ) as s, count(*) as count
FROM wait_fetch_artist
GROUP BY s
ORDER BY s DESC;

-- 查看需要爬取的 comment 的分布
SELECT cast( FLOOR( song_id / 10000000 ) * 10000000 as UNSIGNED ) as s, count(*) as count
FROM comment_progress
WHERE current_status != 2
GROUP BY s
ORDER BY s DESC;

-- 查看需要爬取的 lyric 的分布
SELECT cast( FLOOR( id / 10000000 ) * 10000000 as UNSIGNED ) as s, count(*) as count
FROM wait_fetch_lyric
GROUP BY s
ORDER BY s DESC;




-- 查看本地已有 song 的分布
SELECT cast( FLOOR( song_id / 10000000 ) * 10000000 as UNSIGNED ) as s, count(*) as count
FROM song
GROUP BY s
ORDER BY s DESC;

-- 查看本地已有 user 的分布
SELECT cast( FLOOR( user_id / 10000000 ) * 10000000 as UNSIGNED ) as s, count(*) as count
FROM user
GROUP BY s
ORDER BY s DESC;

-- 查看本地已有 album 的分布
SELECT cast( FLOOR( album_id / 1000000 ) * 1000000 as UNSIGNED ) as s, count(*) as count
FROM album
GROUP BY s
ORDER BY s DESC;

-- 查看本地已有 artist 的分布
SELECT cast( FLOOR( artist_id / 2000000 ) * 2000000 as UNSIGNED ) as s, count(*) as count
FROM artist
GROUP BY s
ORDER BY s DESC;

-- 查看本地已有 playlist 的分布
SELECT cast( FLOOR( playlist_id / 2000000 ) * 2000000 as UNSIGNED ) as s, count(*) as count
FROM playlist
GROUP BY s
ORDER BY s DESC;



-- 查询单个数据库里面各个表所占磁盘空间大小包括其索引的大小
SELECT
    table_schema AS '数据库',
    table_name AS '表名',
    table_rows AS '记录数',
    TRUNCATE (data_length / 1024 / 1024, 2) AS '数据容量(MB)',
    TRUNCATE (index_length / 1024 / 1024, 2) AS '索引容量(MB)',
    TRUNCATE ((data_length + index_length) / 1024 / 1024 / 1024, 2) AS '总容量(GB)'
FROM
    information_schema.TABLES
WHERE
    table_schema = 'neteasemusic'
ORDER BY
    table_rows DESC;