66 lines
2.1 KiB
SQL
66 lines
2.1 KiB
SQL
-- 查看需要爬取的 song 的分布
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SELECT cast( format( t_tmp.song_id / 10000000, 0) * 10000000 as UNSIGNED ) as s, count(*) as count
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FROM (
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SELECT DISTINCT song_id FROM song_album_relation
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UNION
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SELECT DISTINCT song_id FROM song_artist_relation
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) as t_tmp
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WHERE song_id NOT IN ( SELECT song_id FROM song )
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GROUP BY s
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ORDER BY s DESC
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-- 查看需要爬取的 album 的分布
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SELECT cast( format( album_id / 1000000, 0) * 1000000 as UNSIGNED ) as s, count(*) as count
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FROM song_album_relation
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WHERE album_id NOT IN ( SELECT album_id FROM album )
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GROUP BY s
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ORDER BY s DESC
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-- 查看需要爬取的 artist 的分布
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SELECT cast( format( artist_id / 2000000, 0) * 2000000 as UNSIGNED ) as s, count(*) as count
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FROM song_artist_relation
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WHERE artist_id NOT IN ( SELECT artist_id FROM artist )
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GROUP BY s
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ORDER BY s DESC
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-- 查看需要爬取的 comment 的分布
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SELECT cast( format( song_id / 10000000, 0) * 10000000 as UNSIGNED ) as s, count(*) as count
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FROM comment_progress
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WHERE current_status != 2
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GROUP BY s
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ORDER BY s DESC
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-- 查看需要爬取的 lyric 的分布
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SELECT cast( format( song_id / 10000000, 0) * 10000000 as UNSIGNED ) as s, count(*) as count
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FROM song
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WHERE song_id NOT IN ( SELECT song_id FROM lyric )
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GROUP BY s
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ORDER BY s DESC
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-- optimize table
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optimize table album;
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optimize table artist;
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optimize table comment;
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optimize table comment_progress;
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optimize table log;
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optimize table lyric;
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optimize table song;
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optimize table song_album_relation;
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optimize table song_artist_relation;
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optimize table user;
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-- 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
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SELECT
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table_schema AS '数据库',
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table_name AS '表名',
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table_rows AS '记录数',
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TRUNCATE (data_length / 1024 / 1024, 2) AS '数据容量(MB)',
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TRUNCATE (index_length / 1024 / 1024, 2) AS '索引容量(MB)',
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TRUNCATE ((data_length + index_length) / 1024 / 1024 / 1024, 2) AS '总容量(GB)'
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FROM
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information_schema.TABLES
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WHERE
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table_schema = 'neteasemusic'
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ORDER BY
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table_rows DESC; |