【MySQL】查看库与表的占用空间
# 查看各个库占用空间 SELECT TABLE_SCHEMA, concat( TRUNCATE ( sum( data_length )/ 1024 / 1024, 2 ), ' MB' ) AS data_size, concat( TRUNCATE ( sum( index_length )/ 1024 / 1024, 2 ), 'MB' ) AS index_size FROM information_schema.TABLES GROUP BY TABLE_SCHEMA ORDER BY data_length DESC; # 查看某个表占用空间 SELECT concat( round( sum( data_length / 1024 / 1024 ), 2 ), 'MB' ) AS data_length_MB, concat( round( sum( index_length / 1024 / 1024 ), 2 ), 'MB' ) AS index_length_MB FROM information_schema.TABLES WHERE table_schema = 'test' AND table_name = 'test_tb'
其他的补充信息如下
# 查看某个库中的表信息 SELECT table_name, table_type, ENGINE FROM information_schema.TABLES WHERE table_schema = 'db5' ORDER BY table_name # 查看整个实例占用空间 SELECT concat( round( sum( data_length / 1024 / 1024 ), 2 ), 'MB' ) AS data_length_MB, concat( round( sum( index_length / 1024 / 1024 ), 2 ), 'MB' ) AS index_length_MB FROM information_schema.TABLES;
1.作者:Syw 2.出处:http://www.cnblogs.com/syw20170419/ 3.本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接,否则保留追究法律责任的权利。 4.如果文中有什么错误,欢迎指出。以免更多的人被误导。 |