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
mysqli连接;
<?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);
} ?>
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。
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:'.$ok.'</div>';
}
还有另一种选择……下面是如何在ansible中做到这一点。它假设数据库的名称在dbname中,并且您已经配置了访问权限。
- name: Get list of DB tables that need converting to InnoDB
command: >
mysql --batch --skip-column-names --execute="SELECT TABLE_NAME
FROM information_schema.TABLES
WHERE TABLE_SCHEMA = '{{ dbname }}' AND ENGINE = 'MyISAM';"
register: converttables
check_mode: no
changed_when: False
- name: Convert any unconverted tables
command: >
mysql --batch --skip-column-names --execute="ALTER TABLE `{{ dbname }}`.`{{ item }}` ENGINE = InnoDB;"
with_items: "{{ converttables.stdout_lines }}"
<?php
// Convert all MyISAM tables to INNODB tables in all non-special databases.
// Note: With MySQL less than 5.6, tables with a fulltext search index cannot be converted to INNODB and will be skipped.
if($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();
?>
<?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");
}
}