查看mysql数据库 数据量大小和索引数据大小

查看某个数据库的数据量 和索引量的大小

SELECT
	SUM(DATA_LENGTH)/ 1024 / 1024 + SUM(INDEX_LENGTH)/ 1024 / 1024
FROM
	information_schema. TABLES
WHERE
	TABLE_SCHEMA = 'ice_produce_cn';

查看索引量的大小

SELECT
	SUM(INDEX_LENGTH)/ 1024 / 1024
FROM
	information_schema. TABLES
WHERE
	TABLE_SCHEMA = 'ice_produce_cn';

查看数据量排名前100的表

select TABLE_NAME,DATA_LENGTH/ 1024 / 1024,TABLE_ROWS,ENGINE from information_schema.TABLES
 WHERE TABLE_SCHEMA = 'ice_produce_cn' order by DATA_LENGTH desc limit 100;

查看索引数据排名前100的表

SELECT
	TABLE_NAME,
	(DATA_LENGTH / 1024 / 1024) ,
	(INDEX_LENGTH / 1024 / 1024) ,
	TABLE_ROWS,
	ENGINE
FROM
	information_schema.TABLES
WHERE
	TABLE_SCHEMA = 'ice_produce_cn'
ORDER BY
	DATA_LENGTH DESC,
	INDEX_LENGTH DESC
LIMIT 100;