[英]How can I determine type of mysql database : whether it is InnoDB or MyISAM?
To determine the storage engine being used by a table, you can use show table status
. 要确定表正在使用的存储引擎,可以使用
show table status
。 The Engine
field in the results will show the database engine for the table. 结果中的“
Engine
字段将显示该表的数据库引擎。 Alternately, you can select the engine
field from information_schema.tables
: 或者,您可以从
information_schema.tables
选择engine
字段:
select engine
from information_schema.tables
where table_schema = 'schema_name'
and table_name = 'table_name'
You can change between storage engines using alter table
: 您可以使用
alter table
在存储引擎之间进行alter table
:
alter table the_table engine = InnoDB;
Where, of course, you can specify any available storage engine. 当然,您可以在哪里指定任何可用的存储引擎。
选择有问题的数据库并运行show table status;
SHOW TABLE STATUS FROM `database`;
will list everything for all tables, starting with whether they are MyISAM or InnoDB. 将列出所有表的所有内容,从它们是MyISAM还是InnoDB开始。 if you desire to list only data regarding 1 table, the syntax below may be used* :
如果您只希望列出有关1个表的数据,则可以使用以下语法*:
SHOW TABLE STATUS FROM `database` LIKE 'table';
to change the table engine: 更改表引擎:
ALTER TABLE `table` ENGINE=InnoDB;
*attention use the GRAVE ACCENT (` backtick) for the database name and the table name and the SINGLE QUOTE (') for the comparison string (portion of table name) after LIKE. *请注意,在LIKE之后,将GRAVE ACCENT(`反引号)用作数据库名称和表名称,并将SINGLE QUOTE(')用作比较字符串(表名称的一部分)。
` != '
'!='
Regarding converting myIsam to Innodb 关于将myIsam转换为Innodb
http://dev.mysql.com/doc/refman/5.0/en/converting-tables-to-innodb.html http://dev.mysql.com/doc/refman/5.0/en/converting-tables-to-innodb.html
Here is a query that lists all tables in all databases and their storage engines: 这是一个查询,列出了所有数据库及其存储引擎中的所有表:
SELECT table_name, table_schema, engine
FROM information_schema.tables;
(From https://serverfault.com/a/244792/406647 ) (来自https://serverfault.com/a/244792/406647 )
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