Mysql 如何将MyISAM中的所有表转换为InnoDB?
我知道我可以单独发布alter table,将表存储从MyISAM更改为InnoDBMysql 如何将MyISAM中的所有表转换为InnoDB?,mysql,sql,innodb,Mysql,Sql,Innodb,我知道我可以单独发布alter table,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地将它们全部更改为InnoDB?您可以用自己喜欢的脚本语言编写一个脚本。脚本将执行以下操作: echo 'SHOW TABLES;' \ | mysql -u <username> --password=<password> -D <schema> \ | awk '!/^Tables_in_/ {print "ALTER TABLE `"$
我想知道是否有一种方法可以快速地将它们全部更改为InnoDB?您可以用自己喜欢的脚本语言编写一个脚本。脚本将执行以下操作:
echo 'SHOW TABLES;' \
| mysql -u <username> --password=<password> -D <schema> \
| awk '!/^Tables_in_/ {print "ALTER TABLE `"$0"` ENGINE = InnoDB;"}' \
| column -t \
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;
显示完整的表对于返回的每一行,检查第二列是否显示'BASE TABLE'
,而不是'VIEW'
如果不是'VIEW'
,发出相应的ALTER TABLE
命令。 您可以在mysql命令行工具中执行此语句:
echo "SELECT concat('ALTER TABLE `',TABLE_NAME,'` ENGINE=InnoDB;')
FROM Information_schema.TABLES
WHERE ENGINE != 'InnoDB' AND TABLE_TYPE='BASE TABLE'
AND TABLE_SCHEMA='name-of-database'" | mysql > convert.sql
您可能需要使用以下命令指定用户名和密码:mysql-u username-p
结果是一个sql脚本,您可以通过管道返回到mysql:
mysql name-of-database < convert.sql
数据库的mysql名称convert.sql
替换上述语句和命令行中的“数据库名称”。将其用作phpMyAdmin中的sql查询
<?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");
}
}
SELECT CONCAT('ALTER TABLE ',table_schema,'.',table_name,' engine=InnoDB;')
FROM information_schema.tables
WHERE engine = 'MyISAM';
在下面的脚本中,用特定数据替换和
要显示可以复制粘贴到mysql客户端会话中的语句,请键入以下命令:
echo 'SHOW TABLES;' \
| mysql -u <username> --password=<password> -D <schema> \
| awk '!/^Tables_in_/ {print "ALTER TABLE `"$0"` ENGINE = InnoDB;"}' \
| column -t \
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;
echo'显示表格;'\
|mysql-u——密码=-D\
|啊/^_u/{print“ALTER TABLE`“$0”`ENGINE=InnoDB;“}”中的表\
|t列\
要简单地执行更改,请使用以下命令:
echo 'SHOW TABLES;' \
| mysql -u <username> --password=<password> -D <schema> \
| awk '!/^Tables_in_/ {print "ALTER TABLE `"$0"` ENGINE = InnoDB;"}' \
| column -t \
| mysql -u <username> --password=<password> -D <schema>
echo'显示表格;'\
|mysql-u——密码=-D\
|啊/^_u/{print“ALTER TABLE`“$0”`ENGINE=InnoDB;“}”中的表\
|t列\
|mysql-u——密码=-D
信贷:这是中概述的内容的一个变体。运行此SQL语句(在MySQL客户端、phpMyAdmin或任何地方)以检索数据库中的所有MyISAM表
用数据库名称替换\u db
变量的name\u值
SET @DATABASE_NAME = 'name_of_your_db';
SELECT CONCAT('ALTER TABLE `', 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;
然后,复制输出并作为新的SQL查询运行。从mysql内部,您可以使用文本编辑器使用搜索/替换:
SELECT table_schema, table_name FROM INFORMATION_SCHEMA.TABLES WHERE engine = 'myisam';
注意:您可能应该忽略information_schema和mysql,因为“实现一些mysql内部结构的mysql和information_schema数据库仍然使用MyISAM。特别是,您不能将grant表切换为使用InnoDB。”()
在任何情况下,请注意要忽略并运行的表:
SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE engine = 'myisam';
现在只需将该列表复制/粘贴到文本编辑器中,并用“altertable”等搜索/替换“|”
然后,您将得到如下列表,您只需将其粘贴到mysql终端即可:
ALTER TABLE arth_commentmeta ENGINE=Innodb;
ALTER TABLE arth_comments ENGINE=Innodb;
ALTER TABLE arth_links ENGINE=Innodb;
ALTER TABLE arth_options ENGINE=Innodb;
ALTER TABLE arth_postmeta ENGINE=Innodb;
ALTER TABLE arth_posts ENGINE=Innodb;
ALTER TABLE arth_term_relationships ENGINE=Innodb;
ALTER TABLE arth_term_taxonomy ENGINE=Innodb;
ALTER TABLE arth_terms ENGINE=Innodb;
ALTER TABLE arth_usermeta ENGINE=Innodb;
mysql -u [username] -p[password] -B -N -e 'show tables like "arth_%"' [database name] | xargs -I '{}' echo "ALTER TABLE {} ENGINE=INNODB;"
如果您的文本编辑器无法轻松做到这一点,那么这里有另一个解决方案,可以从linux终端为数据库的一个前缀获取类似列表(您可以将其粘贴到mysql中):
ALTER TABLE arth_commentmeta ENGINE=Innodb;
ALTER TABLE arth_comments ENGINE=Innodb;
ALTER TABLE arth_links ENGINE=Innodb;
ALTER TABLE arth_options ENGINE=Innodb;
ALTER TABLE arth_postmeta ENGINE=Innodb;
ALTER TABLE arth_posts ENGINE=Innodb;
ALTER TABLE arth_term_relationships ENGINE=Innodb;
ALTER TABLE arth_term_taxonomy ENGINE=Innodb;
ALTER TABLE arth_terms ENGINE=Innodb;
ALTER TABLE arth_usermeta ENGINE=Innodb;
mysql -u [username] -p[password] -B -N -e 'show tables like "arth_%"' [database name] | xargs -I '{}' echo "ALTER TABLE {} ENGINE=INNODB;"
以下是Django用户的一种方法:
from django.core.management.base import BaseCommand
from django.db import connections
class Command(BaseCommand):
def handle(self, database="default", *args, **options):
cursor = connections[database].cursor()
cursor.execute("SHOW TABLE STATUS");
for row in cursor.fetchall():
if row[1] != "InnoDB":
print "Converting %s" % row[0],
result = cursor.execute("ALTER TABLE %s ENGINE=INNODB" % row[0])
print result
将其添加到文件夹管理/commands/下的应用程序中,然后您可以使用manage.py命令转换所有表:
python manage.py convert_to_innodb
使用此行更改单个表的数据库引擎
ALTER TABLE table_name ENGINE = INNODB;
试试这个shell脚本
DBENGINE='InnoDB' ;
DBUSER='your_db_user' ;
DBNAME='your_db_name' ;
DBHOST='your_db_host'
DBPASS='your_db_pass' ;
mysqldump --add-drop-table -h$DBHOST -u$DBUSER -p$DBPASS $DBNAME > mtest.sql; mysql -h$DBHOST -u$DBUSER -p$DBPASS $DBNAME -Nse "SHOW TABLES;" | while read TABLE ; do mysql -h$DBHOST -u$DBUSER -p$DBPASS $DBNAME -Nse "ALTER TABLE $TABLE ENGINE=$DBENGINE;" ; done
我是一个新手,必须找到自己的解决方案,因为网络上的mysql命令通常拼写错误,这给刚起步的人带来了现实生活中的噩梦。这是我的解决方案
我用excel一次准备了几十个命令(准备好复制和粘贴),而不是每个表一个命令
怎么做?
展开putty窗口并输入mysql,然后运行命令“showtable STATUS;”并将输出复制/粘贴到microsoft excel。转到数据选项卡并使用“文本到列”功能,用空格键分隔列。然后按显示表类型的列对列进行排序,并删除表已采用InnoDb格式的所有行(因为我们不需要对它们运行命令,它们已经完成了)。然后在tables列的左侧添加2列,在右侧添加2列。然后将命令的第一部分粘贴到第1列(见下文)。第2列应仅包含一个空格。第3列是表列。第4列应仅包含一个空格。第5列是命令的最后一部分。应该是这样的:
column-1 column-2 column-3 column-4 column-5
ALTER TABLE t_lade_tr ENGINE=InnoDB;
ALTER TABLE t_foro_detail_ms ENGINE=InnoDB;
ALTER TABLE t_ljk_ms ENGINE=InnoDB;
然后一次复制并粘贴大约5行到mysql中。这将一次转换大约5。我注意到,如果我一次做的不止这些,那么命令就会失败。这是一个简单的php脚本
<?php
@error_reporting(E_ALL | E_STRICT);
@ini_set('display_errors', '1');
$con = mysql_connect('server', 'user', 'pass');
$dbName = 'moodle2014';
$sql = "SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = '".$dbName."';";
$rs = mysql_query($sql, $con);
$count = 0;
$ok = 0;
while($row = mysql_fetch_array($rs)){
$count ++;
$tbl = $row[0];
$sql = "ALTER TABLE ".$dbName.".".$tbl." ENGINE=INNODB;";
$resultado = mysql_query($sql);
if ($resultado){
$ok ++;
echo $sql."<hr/>";
}
}
if ($count == $ok){
echo '<div style="color: green"><b>ALL OK</b></div>';
}else{
echo '<div style="color: red"><b>ERRORS</b>Total tables: '.$count.', updated tables:'.$ok.'</div>';
}
一行:
mysql -u root -p dbName -e
"show table status where Engine='MyISAM';" | awk
'NR>1 {print "ALTER TABLE "$1" ENGINE = InnoDB;"}' |
mysql -u root -p dbName
它还没有被提及,所以我将为后人写下它:
如果要在DB服务器之间迁移(或者有其他原因需要转储并重新加载dta),只需修改mysqldump
的输出即可:
mysqldump --no-data DBNAME | sed 's/ENGINE=MyISAM/ENGINE=InnoDB/' > my_schema.sql;
mysqldump --no-create-info DBNAME > my_data.sql;
然后再次加载:
mysql DBNAME < my_schema.sql && mysql DBNAME < my_data.sql
mysql-DBNAME
(另外,根据我有限的经验,这可能比更改“live”表要快得多。这可能取决于数据和索引的类型。)此util脚本的一些修复程序
SET @DATABASE_NAME = 'Integradb';
SELECT CONCAT('ALTER TABLE ', table_schema, '.', table_name, ' ENGINE=InnoDB;') AS sql_statements
FROM information_schema.tables AS tb
WHERE table_schema = @DATABASE_NAME
AND `ENGINE` = 'MyISAM'
AND `TABLE_TYPE` = 'BASE TABLE'
ORDER BY table_name DESC;
一个普通的MySQL版本
您只需启动mysql可执行文件,使用数据库并复制粘贴查询即可
这将把当前数据库中的所有MyISAM表转换为INNODB表
删除过程(如果存在)转换为InNODB;
分隔符//
创建过程convertToInnodb()
开始
主循环:循环
从information_schema.TABLES中选择TABLE_NAME到@convertTable中
其中类似于数据库()的“TABLE_SCHEMA”
和'ENGINE'类似于'MyISAM'顺序,按表1命名;
如果@convertTable为空,则
离开主回路;
如果结束;
设置@sqltext:=CONCAT('altertable`',DATABASE(),''.'''.'',@convertTable','ENGINE=INNODB');
从@sqltext准备转换表;
执行转换表;
取消分配准备转换表;
设置@convertTable=NULL;
端环主环;
结束//
定界符;
调用convertToInnodb();
如果存在CONVERTOINNODB,则删除程序;
工作起来很有魅力
这将为您提供一个包含alter查询的所有表的列表,您可以批量运行这些表
<?php
// Convert all MyISAM tables to INNODB tables in all non-special databases.
// Note: With MySQL less than 5.6, tables with a fulltext search index cannot be converted to INNODB and will be skipped.
if($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();
?>
ls | grep“.frm”| cut-d.”-f1 | xargs-I{}-n1 mysql-d DBNAME-e“alter table{}ENGINE=INNODB;”-uroot-pxxx<
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;
- 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 }}"
<?php
$host = "host";
$user = "user";
$pass = "pss";
$database = "db_name";
$connect = new mysqli($host, $user, $pass, $database);
// Actual code starts here Dont forget to change db_name !!
$sql = "SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = 'db_name'
AND ENGINE = 'MyISAM'";
$rs = $connect->query($sql);
while($row = $rs->fetch_array())
{
$tbl = $row[0];
$sql = "ALTER TABLE `$tbl` ENGINE=INNODB";
$connect->query($sql);
} ?>
set database=YOURDATABASENAME
for /F "tokens=1 skip=1 usebackq" %%a in (`mysql %%database%% -e "show table status where Engine != 'InnoDB';"`) do (
mysql %database% -e "ALTER TABLE %%a ENGINE = 'InnoDB';"
)
set database=YOURDATABASENAME
for /F "tokens=1 skip=1 usebackq" %%a in (`mysql %%database%% -e "show table status where Engine = 'MyISAM';"`) do (
mysql %database% -e "ALTER TABLE %%a ENGINE = 'InnoDB';"
)
SELECT CONCAT('ALTER TABLE ',TABLE_NAME,' ENGINE=InnoDB;')
FROM INFORMATION_SCHEMA.TABLES
WHERE ENGINE='MyISAM'
AND table_schema = 'your_DB_Name';