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mysql怎么查询数据库容量

藏色散人

发布： 2023-03-25 17:22:23

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mysql查询数据库容量的方法：1、打开DOS窗口，然后进入mysql的bin目录下；2、执行“SELECT table_schema AS 'shujuku',table_name AS 'biaoming',table_rows AS 'jilushu',TRUNCATE (data_length / 1024 / 1024, 2) ...”语句即可查看所有数据库各表容量。

mysql怎么查询数据库容量

本教程操作环境：Windows10系统、MySQL5.7版、Dell G3电脑。

mysql怎么查询数据库容量？

MySql查看数据库及表容量大小并排序

MySql查看数据库及表容量并排序查看所有数据库容量

SELECT
    table_schema AS &#39;数据库&#39;,
    sum(table_rows) AS &#39;记录数&#39;,
    sum(
        TRUNCATE (data_length / 1024 / 1024, 2)
    ) AS &#39;数据容量(MB)&#39;,
    sum(
        TRUNCATE (index_length / 1024 / 1024, 2)
    ) AS &#39;索引容量(MB)&#39;
FROM
    information_schema. TABLES
GROUP BY
    table_schema
ORDER BY
    sum(data_length) DESC,
    sum(index_length) DESC;

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查看所有数据库各表容量

SELECT
    table_schema AS &#39;数据库&#39;,
    table_name AS &#39;表名&#39;,
    table_rows AS &#39;记录数&#39;,
    TRUNCATE (data_length / 1024 / 1024, 2) AS &#39;数据容量(MB)&#39;,
    TRUNCATE (index_length / 1024 / 1024, 2) AS &#39;索引容量(MB)&#39;
FROM
    information_schema. TABLES
ORDER BY
    data_length DESC,
    index_length DESC;

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查看指定数据库容量

SELECT
    table_schema AS &#39;数据库&#39;,
    sum(table_rows) AS &#39;记录数&#39;,
    sum(
        TRUNCATE (data_length / 1024 / 1024, 2)
    ) AS &#39;数据容量(MB)&#39;,
    sum(
        TRUNCATE (index_length / 1024 / 1024, 2)
    ) AS &#39;索引容量(MB)&#39;
FROM
    information_schema.tables where table_schema = &#39;your_table_name&#39;;

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查看指定数据库各表容量

SELECT
    table_schema AS &#39;数据库&#39;,
    table_name AS &#39;表名&#39;,
    table_rows AS &#39;记录数&#39;,
    TRUNCATE ( data_length / 1024 / 1024, 2 ) AS &#39;数据容量(MB)&#39;,
    TRUNCATE ( index_length / 1024 / 1024, 2 ) AS &#39;索引容量(MB)&#39; 
FROM
    information_schema.TABLES 
WHERE
    table_schema = &#39;指定的库名&#39; 
ORDER BY
    data_length DESC,
    index_length DESC;

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