title char(20)) ENGINE = INNODB; 修改表存储类型: Alter table tableName engine =engineName 备注:设置完后把以下几个开启: # Uncomment the following if you are using InnoDB tables innodb_data_home_dir = /var/lib/mysql #innodb_data_
mysql> SELECT CONCAT(ROUND(SUM(index_length)/(1024*1024), 2), ' MB') AS 'Total Index Size' FROM TABLES WHERE table_schema = 'mysql' and table_name='user'; +---+ | Total Index Size | +---+ | 0.00 MB | +---+ 1 row in set (0.00 sec) mysql> show create table mysql.use...
tion. The value of myisam_data_pointer_size can be from 2 to 7. A value of 4 permits tables up to 4GB; a value of 6 permits tables up to 256TB 如果你把max_rows 设为5, 但 myisam_data_pointer_size范围是 2~7, 2个字节就足够了( 2^16=64k), 所以其实就是让myisam是用2个字节的...
mysql> SELECT CONCAT(ROUND(SUM(index_length)/(1024*1024), 2), ' MB') AS 'Total Index Size' FROM TABLES WHERE table_schema = 'test' and table_name='a_yuser'; +---+ | Total Index Size | +---+ | 21.84 MB | +---+ 1 row in set (0.00 sec) mysql> show create table test...
To change the default size limit forMyISAMtables, set themyisam_data_pointer_size, which sets the number of bytes used for internal row pointers. The value is used to set the pointer size for new tables if you do not specify theMAX_ROWSoption. The value ofmyisam_data_pointer_sizecan ...
sql_mode 模式的默认值中去掉了NO_AUTO_CREATE_USER ,MySQL 8.0的默认配置为sql_mode='ONLY_FULL_GROUP_BY, STRICT_TRANS_TABLES, NO_ZERO_IN_DATE, NO_ZERO_DATE, ERROR_FOR_DIVISION_BY_ZERO, NO_ENGINE_SUBSTITUTION'。 2.3 MySQL 8.0升级踩坑,不同版本MySQL的参数默认值改变导致业务报错 ...
(1024*1024*1024),4),'G')AS'Total'FROMinformation_schema.TABLESWHEREtable_schemaLIKE'test';+---+---+---+---+---+|TableName|NumberofRows|Data Size|IndexSize|Total|+---+---+---+---+---+|test.a_br|0.4625M|0.0259G|0.0171G|0.0431G||test.a_skuclr|0.7099M|0.0660G|0.0259G|0....
MySQL: size of your tables – tricks and tips Edwin Desouza September 18, 2018 02:07PM Sorry, you can't reply to this topic. It has been closed.Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not...
MySQL has no limit on the number of tables. The underlying file systemmay have a limit on the number of files that represent tables.Individual storage engines may impose engine-specific constraints.InnoDB permits up to 4 billion tables.For information about the physical representation of a table,...
You are using InnoDB tables and have run out of room in an InnoDB tablespace file. The maximum tablespace size is also the maximum size for a table. For tablespace size limits, see Section 17.21, “InnoDB Limits”. Generally, partitioning of tables into multiple tablespace files is recommende...