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不过在MySQL中,DATA_LENGTH通常是通过information_schema数据库的TABLES表来查看的。 查询表的数据长度 想要查看特定表的总数据长度,可以执行这样一个查询: SELECT DATA_LENGTH FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'database_name' ANDTABLE_NAME = 'table_name'; 把database_name换成数据库的名字...
SELECT TABLE_NAME, DATA_LENGTH FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'database_name'; 这将列出指定数据库中每张表的DATA_LENGTH,精准掌握每个表的尺寸。 索引长度的获取 除了基础数据长度,了解索引占用空间也同等重要。INDEX_LENGTH字段可以获取这信息: SELECT TABLE_NAME, INDEX_LENGTH FROM infor...
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES; +---+ | data | +---+ | 550.82MB | +---+ 1 row in set (0.17 sec) 查看指定库的大小 mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema...
说明: 通过MySQL的 information_schema 数据库,可查询数据库中每个表占用的空间、表记录的行数;该库中有一个 TABLES 表,这个表主要字段分别是: TABLE_SCHEMA : 数据库名 TABLE_NAME:表名 ENGINE:所使用的存储引擎 TABLES_ROWS:记录数 DATA_LENGTH:数据大小 INDEX_LENGTH:索引大小 其他字段请参考MySQL的手册,查看...
查看当前链接所有业务数据库 SELECT schema_name AS db_name FROM information_schema.schemata ...
information_schema.TABLES WHERE table_schema = 'osale_im'; 四、查看指定数据库各表容量大小 1 2 3 4 5 6 7 8 9 10 11 12 13 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)', TRU...
MySQL提供了一个名为information_schema的数据库,其中包含了关于数据库元数据的信息,包括表的大小。可以通过查询TABLES表来获取特定表的大小信息。 代码语言:txt 复制 SELECT TABLE_NAME AS 'Table Name', ROUND(((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024), 2) AS 'Size (MB)' FROM information_schema....
In the catalogs tab of MySQL administrator i select my database schema, all the tables appear with their data lengths, index lengths and the number of rows each table has. The biggest table I have is 13177 rows. The data length used is 1.5mb of the 2mb, what happens if the rows in ...
Re: Data length for INNODB tables 726 archana mattoo February 21, 2018 06:50AM Re: Data length for INNODB tables 724 sreekanth pm February 22, 2018 03:13AM Sorry, you can't reply to this topic. It has been closed. Content reproduced on this site is the property of the respective copy...