mysql查看每個數據庫所占磁盤大小

#查看每個數據庫所占磁盤大小

 

SELECT
  TABLE_SCHEMA AS "庫名",
  TRUNCATE(SUM(`DATA_LENGTH`) / 1024 / 1024, 2) AS "表所占空間（MB）",
  TRUNCATE(SUM(`INDEX_LENGTH`) / 1024 / 1024, 2) AS "索引所占空間（MB）",
  TRUNCATE((SUM(`DATA_LENGTH`) + SUM(`INDEX_LENGTH`)) / 1024 / 1024,2) AS "空間累計（MB）"
FROM
  information_schema.`TABLES`
GROUP BY `TABLE_SCHEMA`;

 

 #查看某個數據庫各表所占磁盤大小

 

SELECT
    TABLE_NAME,
    TRUNCATE (DATA_LENGTH / 1024 / 1024, 2) AS "DATA_SIZE(MB)",
    TRUNCATE (INDEX_LENGTH / 1024 / 1024, 2) AS "INDEX_SIZE(MB)"
FROM INFORMATION_SCHEMA. TABLES
WHERE TABLE_SCHEMA = 'db_name'
GROUP BY TABLE_NAME
ORDER BY DATA_LENGTH DESC;