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
<?php
// connect your database here first
mysql_connect('host', 'user', 'pass');
$databases = mysql_query('SHOW databases');
while($db = mysql_fetch_array($databases)) {
echo "database => {$db[0]}\n";
mysql_select_db($db[0]);
$tables = mysql_query('SHOW tables');
while($tbl = mysql_fetch_array($tables)) {
echo "table => {$tbl[0]}\n";
mysql_query("ALTER TABLE {$tbl[0]} ENGINE=InnoDB");
}
}
其他回答
您可以用您最喜欢的脚本语言编写一个脚本来完成它。该脚本将执行以下操作:
Issue显示满表。对于返回的每一行,检查第二列是否显示为“BASE TABLE”而不是“VIEW”。如果它不是'VIEW',发出适当的ALTER TABLE命令。
<?php
// connect your database here first
//
// Actual code starts here
$sql = "SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = 'your_database_name'
AND ENGINE = 'MyISAM'";
$rs = mysql_query($sql);
while($row = mysql_fetch_array($rs))
{
$tbl = $row[0];
$sql = "ALTER TABLE `$tbl` ENGINE=INNODB";
mysql_query($sql);
}
?>
还有另一种选择……下面是如何在ansible中做到这一点。它假设数据库的名称在dbname中,并且您已经配置了访问权限。
- name: Get list of DB tables that need converting to InnoDB
command: >
mysql --batch --skip-column-names --execute="SELECT TABLE_NAME
FROM information_schema.TABLES
WHERE TABLE_SCHEMA = '{{ dbname }}' AND ENGINE = 'MyISAM';"
register: converttables
check_mode: no
changed_when: False
- name: Convert any unconverted tables
command: >
mysql --batch --skip-column-names --execute="ALTER TABLE `{{ dbname }}`.`{{ item }}` ENGINE = InnoDB;"
with_items: "{{ converttables.stdout_lines }}"
要为所有非系统模式中的所有表生成ALTER语句,按这些模式/表排序,运行以下命令:
SELECT CONCAT('ALTER TABLE ',TABLE_SCHEMA,'.', table_name, ' ENGINE=InnoDB;') AS sql_statements
FROM information_schema.tables
WHERE TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema', 'innodb', 'sys', 'tmp')
AND `ENGINE` = 'MyISAM'
AND `TABLE_TYPE` = 'BASE TABLE'
ORDER BY TABLE_SCHEMA, table_name DESC;
之后,通过客户端运行这些查询来执行修改。
答案基于上述答案,但改进了模式处理。
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';