mysql怎样查看表的大小
发布时间：09/01 来源：未知 浏览：
关键词：
mysql 查看表的大小办法：1、查看所有数据库各表容量大小，代码为【truncate(data_length/1024/1024, 2) as '数据容量(MB)'】；2、查看指定数据库各表容量大小。
mysql 查看表的大小办法：
1.查看所有数据库容量大小
select table_schema as '数据库', sum(table_rows) as '记载数', 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 '记载数', 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
例：查看mysql库容量大小
select table_schema as '数据库', sum(table_rows) as '记载数', 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
例：查看mysql库各表容量大小
select table_schema as '数据库', table_name as '表名', table_rows as '记载数', 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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