我知道我可以单独发出一个alter表,将表存储从MyISAM更改为InnoDB。
我想知道是否有一种方法可以快速将它们全部更改为InnoDB?
我知道我可以单独发出一个alter表,将表存储从MyISAM更改为InnoDB。
我想知道是否有一种方法可以快速将它们全部更改为InnoDB?
当前回答
对这个util脚本的一些修复
SET @DATABASE_NAME = 'Integradb';
SELECT CONCAT('ALTER TABLE ', table_schema, '.', table_name, ' ENGINE=InnoDB;') AS sql_statements
FROM information_schema.tables AS tb
WHERE table_schema = @DATABASE_NAME
AND `ENGINE` = 'MyISAM'
AND `TABLE_TYPE` = 'BASE TABLE'
ORDER BY table_name DESC;
其他回答
<?php
// Convert all MyISAM tables to INNODB tables in all non-special databases.
// Note: With MySQL less than 5.6, tables with a fulltext search index cannot be converted to INNODB and will be skipped.
if($argc < 4)
exit("Usage: {$argv[0]} <host> <username> <password>\n");
$host = $argv[1];
$username = $argv[2];
$password = $argv[3];
// Connect to the database.
if(!mysql_connect($host, $username, $password))
exit("Error opening database. " . mysql_error() . "\n");
// Get all databases except special ones that shouldn't be converted.
$databases = mysql_query("SHOW databases WHERE `Database` NOT IN ('mysql', 'information_schema', 'performance_schema')");
if($databases === false)
exit("Error showing databases. " . mysql_error() . "\n");
while($db = mysql_fetch_array($databases))
{
// Select the database.
if(!mysql_select_db($db[0]))
exit("Error selecting database: {$db[0]}. " . mysql_error() . "\n");
printf("Database: %s\n", $db[0]);
// Get all MyISAM tables in the database.
$tables = mysql_query("SHOW table status WHERE Engine = 'MyISAM'");
if($tables === false)
exit("Error showing tables. " . mysql_error() . "\n");
while($tbl = mysql_fetch_array($tables))
{
// Convert the table to INNODB.
printf("--- Converting %s\n", $tbl[0]);
if(mysql_query("ALTER TABLE `{$tbl[0]}` ENGINE = INNODB") === false)
printf("--- --- Error altering table: {$tbl[0]}. " . mysql_error() . "\n");
}
}
mysql_close();
?>
SELECT CONCAT('ALTER TABLE ',TABLE_NAME,' ENGINE=InnoDB;')
FROM INFORMATION_SCHEMA.TABLES
WHERE ENGINE='MyISAM'
AND table_schema = 'mydatabase';
效果非常好。
这将为您提供可以批处理运行的带有alter查询的所有表的列表
创建数据库的SQL转储文件(database_dump.sql),并在记事本中打开它。 将所有“ENGINE=MyISAM”替换为“ENGINE=InnoDB”。 保存文件并将其导入数据库。
遵循步骤:
Use MySql commands as follows, for converting to InnoDB (ALTER TABLE t1 ENGINE = InnoDB) or (ALTER TABLE t1 ENGINE = MyISAM) for MyISAM (You should do this for each individual tables, t1 is for the table name.). Write a script that loops on all tables and run the alter command Use an already available script to handle that: https://github.com/rafihaidari/convert-mysql-tables-storage-engine Try this SQL to Get all info will get all the tables information then you can change all the table from isam to InnoDB SELECT CONCAT('ALTER TABLE ',TABLE_NAME,' ENGINE=InnoDB;') FROM INFORMATION_SCHEMA.TABLES WHERE ENGINE='MyISAM' AND table_schema = 'your_DB_Name';
在我的例子中,我从一个默认MyISAM的MySQL实例迁移到一个默认InnoDB的MariaDB实例。
根据MariaDB迁移文件。
在旧服务器上运行:
mysqldump -u root -p --skip-create-options --all-databases > migration.sql
——skip-create-options确保数据库服务器在加载数据时使用默认存储引擎,而不是MyISAM。
mysql -u root -p < migration.sql
这抛出了一个关于创建mysql.db的错误,但现在一切都很好了:)