mysql获取数据库所有表名、中文名、注释、数据量及存储容量

科技 07-21 来源：小鱼科技3

查各表数据量

 -- 查各表数据量
SELECT
    table_schema AS '数据库名',
    table_name AS '表名',
    TABLE_COMMENT AS '表注释',
    CREATE_TIME AS '创建时间',
    UPDATE_TIME AS '最新更新时间',
    table_rows AS '数据量' 
FROM
    information_schema.TABLES 
WHERE
    table_schema NOT LIKE 'information_schema' 
    AND table_name NOT LIKE '%bak%' 
    AND table_name NOT LIKE '%performance_schema%'
;

查询各表数据量

查看所有数据库各表容量大小

-- 查看所有数据库各表容量大小
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;

查看所有数据库各表容量大小

查看所有数据库各容量大小

-- 查看所有数据库各容量大小
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;

查看所有数据库各容量大小

统计每个库大小

-- 统计每个库大小
SELECT
table_schema,SUM(AVG_ROW_LENGTH*TABLE_ROWS+INDEX_LENGTH)/1024/1024 AS total_mb
FROM information_schema.TABLES group by table_schema;