MySQL查询数据库大小

有没有可以用来确定MySQL数据库大小的查询或函数？如果不是什么是在MySQL中查找数据库大小的典型方法？MySQL查询数据库大小

我是谷歌上搜索，发现SELECT CONCAT(sum(ROUND(((DATA_LENGTH + INDEX_LENGTH - DATA_FREE)/1024/1024),2))," MB") AS Size FROM INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA like '%YOUR_DB_NAME%' ;

，并返回，我所知道的是400MB为474989023196466.25 MB数据库！

来源

2012-08-07 user1529891

在我所有的表， data_free比data_length大得多，这意味着您的查询将返回一个负数。也许它将它解释为无符号的正整数，因此是无意义的结果。当我尝试粘贴该查询时，出现错误“BIGINT UNSIGNED值超出范围”。 – octern 2012-08-07 18:38:40

对于本页面提供的特定数据库/表格答案的大小，将有助于您http://www.rathishkumar.in/2017/12/how-to-find-database-and-table-size-in-mysql.html – rathishDBA 2017-12-29 12:45:33

尝试与此查询：

SELECT table_schema AS "Data Base Name", 
sum(data_length + index_length)/1024/1024 AS "Data Base Size in MB" 
FROM information_schema.TABLES GROUP BY table_schema ;

或此，如果你想轮：

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

来源

2012-08-07 18:33:56 aleroot

尝试：

SELECT table_schema, sum(data_length + index_length) FROM information_schema.TABLES GROUP BY table_schema;

来源

2012-08-07 18:34:43

SELECT table_schema "DB Name", 
     Round(Sum(data_length + index_length)/1024/1024, 1) "DB Size in MB" 
FROM information_schema.tables 
GROUP BY table_schema;

来源

2016-08-01 10:35:17 rusllonrails

MySQL查询数据库大小

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