Clone MySQL database

Question

I have database on a server with 120 tables.

I want to clone the whole database with a new db name and the copied data.

Is there an efficient way to do this?

Answer 1

There is mysqldbcopy tool from the MySQL Utilities package. http://dev.mysql.com/doc/mysql-utilities/1.3/en/mysqldbcopy.html

Answer 2

If you want to make sure it is an exact clone, the receiving database needs to be entirely cleared / dropped. This way, the new db only has the tables in your import file and nothing else. Otherwise, your receiving database could retain tables that weren't specified in your import file.
ex from prior answers:

DB1 == tableA, tableB
DB2 == tableB, tableC
DB1 imported to -> DB2
DB2 == tableA, tableB, tableC //true clone should not contain tableC

the change is easy with --databases and --add-drop-database (see mysql docs). This adds the drop statement to the sqldump so your new database will be an exact replica:

$ mysqldump -h $ip -u $user -p$pass --databases $dbname --add-drop-database > $file.sql
$ mysql -h $ip $dbname -u $user -p$pass < $file.sql

of course replace the $ variables and as always, no space between password and -p. For extra security, strip the -p$pass from your command

Answer 3

$newdb = (date('Y')-1);
$mysqli->query("DROP DATABASE `".$newdb."`;");
$mysqli->query("CREATE DATABASE `".$newdb."`;");

$query = "
SELECT
TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA LIKE 'rds'
";
$result = $mysqli->query($query)->fetch_all(MYSQLI_ASSOC);
foreach($result as $val) {
    echo $val['TABLE_NAME'].PHP_EOL;
    $mysqli->query("CREATE TABLE `".$newdb."`.`".$val['TABLE_NAME']."` LIKE rds.`".$val['TABLE_NAME']."`");
    $mysqli->query("INSERT `".$newdb."`.`".$val['TABLE_NAME']."` SELECT * FROM rds.`".$val['TABLE_NAME']."`");
}

Answer 4

Like accepted answer but without .sql files:

mysqldump sourcedb -u <USERNAME> -p<PASS> | mysql destdb -u <USERNAME> -p<PASS>

Answer 5

$ mysqldump yourFirstDatabase -u user -ppassword > yourDatabase.sql
$ mysql yourSecondDatabase -u user -ppassword < yourDatabase.sql

Answer 6

mysqldump -u <user> --password=<password> <DATABASE_NAME> | mysql -u <user> --password=<password> -h <hostname> <DATABASE_NAME_NEW>