统计数据库大小

##统计每个库大小
mysql> use information_schema;
Database changed
mysql> SELECT TABLE_SCHEMA,SUM(DATA_LENGTH)/1024/1024/1024 as DATA_LENGTH,SUM(INDEX_LENGTH)/1024/1024/1024 as INDEX_LENGTH,SUM(DATA_LENGTH+INDEX_LENGTH)/1024/1024/1024 as SUM_DATA_INDEX FROM information_schema.TABLES WHERE TABLE_SCHEMA!='information_schema' AND TABLE_SCHEMA!='mysql' GROUP BY TABLE_SCHEMA; 
 

##统计库里每个表的大小
mysql> SELECT TABLE_NAME,DATA_LENGTH,INDEX_LENGTH,SUM(DATA_LENGTH+INDEX_LENGTH) AS TOTAL_SIZE FROM information_schema.TABLES WHERE TABLE_SCHEMA='hcy' GROUP BY TABLE_NAME;

#统计所有数据库的大小
mysql> select sum(data_length+index_length)/1024/1024/1024 from information_schema.tables;

本文转自hcymysql51CTO博客，原文链接： http://blog.51cto.com/hcymysql/890492，如需转载请自行联系原作者