本教程操作环境:Windows10系统、MySQL5.7版、Dell G3电脑。
mysql怎么查询数据库容量?
MySql查看数据库及表容量大小并排序
MySql查看数据库及表容量并排序查看所有数据库容量
SELECT
table_schema AS '数据库',
sum(table_rows) AS '记录数',
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;
查看所有数据库各表容量
SELECT
table_schema AS '数据库',
table_name AS '表名',
table_rows AS '记录数',
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;
查看指定数据库容量
SELECT
table_schema AS '数据库',
sum(table_rows) AS '记录数',
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 = 'your_table_name';
查看指定数据库各表容量
SELECT
table_schema AS '数据库',
table_name AS '表名',
table_rows AS '记录数',
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 = '指定的库名'
ORDER BY
data_length DESC,
index_length DESC;
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