mysql 查询表占用空间大小

-- 查询数据表占用空间大小，Top10
select TABLE_SCHEMA, 
  TABLE_NAME ,
  round(data_length/1024/1024,2) as DATA_LENGTH,
  round(index_length/1024/1024,2) as INDEX_LENGTH,
  round((data_length+index_length)/1024/1024,2) as TOTAL_LENGTH ,
  TABLE_ROWS 
  from  information_schema.tables 
  where TABLE_SCHEMA !='information_schema' and TABLE_SCHEMA !='mysql' 
  order by total_length  desc limit 10;

执行结果：

  

说明：

table_schema 数据库名称

table_name 数据表名称

data_length  表数据占用空间

index_length  表索引占用空间

table_rows 表记录数

加 where TABLE_SCHEMA !='information_schema' and TABLE_SCHEMA !='mysql'  是为了排除系统表。