[英]error while changing table engine to InnoDB
I am changing table engine from MyISAM to InnoDB: 我将表引擎从MyISAM更改为InnoDB:
use db;
alter table table engine=innodb;
But, I've faced a very strange problem. 但是,我遇到了一个非常奇怪的问题。
I can change engine of all tables, but except certain tables, whose names end with _1
. 我可以更改所有表的引擎,但某些表的名称以
_1
结尾的除外。
For example, I can change tables test_2
, test_xy
, but I can't change a table test_1
. 例如,我可以更改表
test_2
, test_xy
,但不能更改表test_1
。 When I try to do it the following error occurs: 当我尝试执行此操作时,会发生以下错误:
ERROR 1005 (HY000): Can't create table 'db.#sql-3d9_348' (errno: 139)
The above is not only one. 以上不只是一个。 I have
learning_1
, learning_2
, learning_xy
and so many pairs like that. 我有
learning_1
, learning_2
, learning_xy
以及如此多的配对。
I don't know why this happens. 我不知道为什么会这样。 Because
_1
is not a special strings such as backtick, quotes, dollar sign, number sign or something. 因为
_1
不是特殊的字符串,例如反引号,引号,美元符号,数字符号等。 And I don't think it is related with a length of db, table name. 而且我认为这与db的长度,表名无关。 Also, not related with table size.
另外,与表格大小无关。
Is there a know bug or issue in altering table engine with a certain table name? 使用特定的表名更改表引擎时是否存在已知的错误或问题?
I have no idea why _1
is an issue, but maybe this is a workaround 我不知道为什么
_1
是一个问题,但是也许这是一种解决方法
use db;
RENAME TABLE test_1 TO test1;
alter table test1 engine=innodb;
RENAME TABLE test1 TO test_1;
Of course I would suggest a backup before doing anything 当然我会建议在做任何事情之前先备份
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