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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。
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 '数据库', sum(table_rows) AS '记录数', sum( TRUNCATE (data_length / 1024 / 1024, 2) ) AS '数据容量(MB)', sum( TRUNCATE (index_length / 1024 / 1024, 2) ) AS '索引容量(MB)' 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 '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 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 '数据库', sum(table_rows) AS '记录数', sum( TRUNCATE (data_length / 1024 / 1024, 2) ) AS '数据容量(MB)', sum( TRUNCATE (index_length / 1024 / 1024, 2) ) AS '索引容量(MB)' FROM information_schema.tables where table_schema = 'your_table_name';
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查看指定数据库各表容量
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 = '指定的库名' ORDER BY data_length DESC, index_length DESC;
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