MySQL中怎么查看数据库表容量大小

MySQL中怎么查看数据库表容量大小，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

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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