MySQL查看表占用空间大小

2023-03-20 914点热度 0人点赞 0条评论

原文链接

MySQL查看表占用空间大小

查看方法

  1. 查看指定数据库所有表容量大小

    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)'
    FROM
    information_schema.tables
    WHERE
    table_schema = 'DB_Name'
    ORDER BY
    data_length DESC,
    index_length DESC;

  2. 切换数据库

    use information_schema;

  3. 查看数据库使用大小

    select concat(round(sum(data_length/1024/1024),2),'MB') as data from tables where table_schema='DB_Name';

  4. 查看表使用大小

    SELECT
    concat(ROUND(SUM(data_length / 1024 / 1024), 2), 'MB') AS data
    FROM
    tables
    WHERE
    table_schema = 'DB_Name'
    AND table_name = 'Table_Name';

王显锋

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