数据库和表的内存大小

Question

我是MySQL学习的新手。我有一个由34个表组成的数据库。我只想知道数据库和每个表的内存大小。有没有特别的查询或脚本来查找内存大小？这个你能帮我吗。我正在使用InnoDB引擎。

Answer 1

对于DB

SELECT table_schema AS "Database", 
ROUND(SUM(data_length + index_length)/1024/1024, 2) AS "Size (MB)" 
FROM information_schema.TABLES 
GROUP BY table_schema; 

对于表

SELECT table_name AS "Table", 
ROUND(((data_length + index_length)/1024/1024), 2) AS "Size (MB)" 
FROM information_schema.TABLES 
WHERE table_schema = "database_name" 
ORDER BY (data_length + index_length) DESC;