查询Mysql中某个DB下的表大小

使用如下语句即可：

sql

SELECT
  TABLE_NAME AS `Table`,
  ROUND((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024) AS `Size (MB)`
FROM
  information_schema.TABLES
WHERE
  TABLE_SCHEMA = "database_name"
ORDER BY
  (DATA_LENGTH + INDEX_LENGTH)
DESC;

如果需要查看特定某张表，可以在 where 语句里加一个条件 TABLE_NAME = "table_name"。