一文看懂MySQL如何查看数据库表容量大小
发布时间：2025-05-25 02:27:47
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摘要：今天主要介绍MySQL查看数据库表容量大小的几个方法，仅供参考。 1. 查看所有数据库容量大小SELECTtable_schemaAS数据库,sum(table_rows)AS记录数,sum(TRUNCA
今天主要介绍MySQL查看数据库表容量大小的几个方法，仅供参考。
1. 查看所有数据库容量大小
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;
2. 查看所有数据库各表容量大小
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 ORDER BY data_length DESC, index_length DESC;
3. 查看指定数据库容量大小
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 = mysql;
4. 查看指定数据库各表容量大小
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 = mysql ORDER BY data_length DESC, index_length DESC;
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