In MySQL I want to clone certain databases. Is there such a thing as a
CREATE DATABASE LIKE <template database here>
command?
I know, there is
CREATE TABLE LIKE
If you want to clone a database, my_database for example, you'll want to run a mysql query and then run a command in the linux terminal:
mysql> CREATE DATABASE my_database_copy;
linux terminal (on the machine with the database):
mysqldump -u username -p my_database | mysql -u username -p my_database_copy
From there you'll likely get 2 "Enter password:" prompts....just input your password, press enter, and wait :)
There is no such command.
But you can create a backup (SQL file) of your database, and then restore all objects in the new database.
Also, you can use GUI tools in dbForge Studio for MySQL (free express edition) - Backup or restore a database. It will help you quickly recreate database and its contents.
I will prefer taking backup and restoring
If it's just for cloning, I will go for MySQLDump
This is just one another way of doing:
mysql> create database new_dbname;
mysql> select concat('create table
new_dbname.',TABLE_NAME,' like wings2020.',TABLE_NAME,'; insert into
new_dbname.',TABLE_NAME,' select * from ol_dbname.',TABLE_NAME,';')
from information_schema.tables where table_schema = 'old_dbname' into
outfile '/tmp/a.txt';
mysql> source /tmp/a.txt;
Related
I was given a MySQL database file that I need to restore as a database on my Windows Server 2008 machine.
I tried using MySQL Administrator, but I got the following error:
The selected file was generated by
mysqldump and cannot be restored by
this application.
How do I get this working?
If the database you want to restore doesn't already exist, you need to create it first.
On the command-line, if you're in the same directory that contains the dumped file, use these commands (with appropriate substitutions):
C:\> mysql -u root -p
mysql> create database mydb;
mysql> use mydb;
mysql> source db_backup.dump;
It should be as simple as running this:
mysql -u <user> -p < db_backup.dump
If the dump is of a single database you may have to add a line at the top of the file:
USE <database-name-here>;
If it was a dump of many databases, the use statements are already in there.
To run these commands, open up a command prompt (in Windows) and cd to the directory where the mysql.exe executable is (you may have to look around a bit for it, it'll depend on how you installed mysql, i.e. standalone or as part of a package like WAMP). Once you're in that directory, you should be able to just type the command as I have it above.
You simply need to run this:
mysql -p -u[user] [database] < db_backup.dump
If the dump contains multiple databases you should omit the database name:
mysql -p -u[user] < db_backup.dump
To run these commands, open up a command prompt (in Windows) and cd to the directory where the mysql.exe executable is (you may have to look around a bit for it, it'll depend on how you installed mysql, i.e. standalone or as part of a package like WAMP). Once you're in that directory, you should be able to just type the command.
mysql -u username -p -h localhost DATA-BASE-NAME < data.sql
look here - step 3: this way you dont need the USE statement
When we make a dump file with mysqldump, what it contains is a big SQL script for recreating the databse contents. So we restore it by using starting up MySQL’s command-line client:
mysql -uroot -p
(where root is our admin user name for MySQL), and once connected to the database we need commands to create the database and read the file in to it:
create database new_db;
use new_db;
\. dumpfile.sql
Details will vary according to which options were used when creating the dump file.
Run the command to enter into the DB
# mysql -u root -p
Enter the password for the user Then Create a New DB
mysql> create database MynewDB;
mysql> exit
And make exit.Afetr that.Run this Command
# mysql -u root -p MynewDB < MynewDB.sql
Then enter into the db and type
mysql> show databases;
mysql> use MynewDB;
mysql> show tables;
mysql> exit
Thats it ........ Your dump will be restored from one DB to another DB
Or else there is an Alternate way for dump restore
# mysql -u root -p
Then enter into the db and type
mysql> create database MynewDB;
mysql> show databases;
mysql> use MynewDB;
mysql> source MynewDB.sql;
mysql> show tables;
mysql> exit
If you want to view the progress of the dump try this:
pv -i 1 -p -t -e /path/to/sql/dump | mysql -u USERNAME -p DATABASE_NAME
You'll of course need 'pv' installed. This command works only on *nix.
I got it to work following these steps…
Open MySQL Administrator and connect to server
Select "Catalogs" on the left
Right click in the lower-left box and choose "Create New Schema"
MySQL Administrator http://img204.imageshack.us/img204/7528/adminsx9.th.gif enlarge image
Name the new schema (example: "dbn")
MySQL New Schema http://img262.imageshack.us/img262/4374/newwa4.th.gif enlarge image
Open Windows Command Prompt (cmd)
Windows Command Prompt http://img206.imageshack.us/img206/941/startef7.th.gif enlarge image
Change directory to MySQL installation folder
Execute command:
mysql -u root -p dbn < C:\dbn_20080912.dump
…where "root" is the name of the user, "dbn" is the database name, and "C:\dbn_20080912.dump" is the path/filename of the mysqldump .dump file
MySQL dump restore command line http://img388.imageshack.us/img388/2489/cmdjx0.th.gif enlarge image
Enjoy!
As a specific example of a previous answer:
I needed to restore a backup so I could import/migrate it into SQL Server. I installed MySql only, but did not register it as a service or add it to my path as I don't have the need to keep it running.
I used windows explorer to put my dump file in C:\code\dump.sql. Then opened MySql from the start menu item. Created the DB, then ran the source command with the full path like so:
mysql> create database temp
mysql> use temp
mysql> source c:\code\dump.sql
You can try SQLyog 'Execute SQL script' tool to import sql/dump files.
Using a 200MB dump file created on Linux to restore on Windows w/ mysql 5.5 , I had more success with the
source file.sql
approach from the mysql prompt than with the
mysql < file.sql
approach on the command line, that caused some Error 2006 "server has gone away" (on windows)
Weirdly, the service created during (mysql) install refers to a my.ini file that did not exist. I copied the "large" example file to my.ini
which I already had modified with the advised increases.
My values are
[mysqld]
max_allowed_packet = 64M
interactive_timeout = 250
wait_timeout = 250
./mysql -u <username> -p <password> -h <host-name like localhost> <database-name> < db_dump-file
You cannot use the Restore menu in MySQL Admin if the backup / dump wasn't created from there. It's worth a shot though. If you choose to "ignore errors" with the checkbox for that, it will say it completed successfully, although it clearly exits with only a fraction of rows imported...this is with a dump, mind you.
One-liner command to restore the generated SQL from mysqldump
mysql -u <username> -p<password> -e "source <path to sql file>;"
Assuming you already have the blank database created, you can also restore a database from the command line like this:
mysql databasename < backup.sql
You can also use the restore menu in MySQL Administrator. You just have to open the back-up file, and then click the restore button.
If you are already inside mysql prompt and assume your dump file dump.sql, then we can also use command as below to restore the dump
mysql> \. dump.sql
If your dump size is larger set max_allowed_packet value to higher. Setting this value will help you to faster restoring of dump.
How to Restore MySQL Database with MySQLWorkbench
You can run the drop and create commands in a query tab.
Drop the Schema if it Currently Exists
DROP DATABASE `your_db_name`;
Create a New Schema
CREATE SCHEMA `your_db_name`;
Open Your Dump File
Click the Open an SQL script in a new query tab icon and choose your db dump file.
Then Click Run SQL Script...
It will then let you preview the first lines of the SQL dump script.
You will then choose the Default Schema Name
Next choose the Default Character Set utf8 is normally a safe bet, but you may be able to discern it from looking at the preview lines for something like character_set.
Click Run
Be patient for large DB restore scripts and watch as your drive space melts away! 🎉
Local mysql:
mysql -u root --password=YOUR_PASS --database=YOUR_DB < ./dump.sql
And if you use docker:
docker exec -i DOCKER_NAME mysql -u root --password=YOUR_PASS --database=YOUR_DB < ./dump.sql
I am running WAMP on Windows 7 and accessing MySQL command line to do some MySQL work. I cannot get the commands for dumping a specific table working (note: I already selected the db with USE db_name):
This works perfectly fine for doing a full db dump:
mysql> mysqldump -u root -p db_name > output_db_name.sql
But I cannot dump a specific table like so:
mysql> mysqldump -u root -p db_name table_name > output_table_dump.sql
Goes to
->
->
I tried many variations and I can't get it to output.
If you are not experienced with a command-line environment, you should use MySQL Workbench. It's a free GUI application that runs on Windows, Mac, and Linux.
To dump a given table in a given database, you can choose the "Data Export" function, and then select individual databases and tables.
The GUI runs mysqldump for you. The output is that of mysqldump, so it's 100% compatible with any way you could produce the dump at the command-line.
I know how to clone tables e.g.:
CREATE TABLE recipes_new LIKE production.recipes;
INSERT recipes_new
SELECT * FROM production.recipes;
But I don't know how to clone e.g. a database_old to database_new database with all the tables and rows from database_old.
So, only the name of the database will change. Everything else stays the same.
Right now I am cloning it by exporting the database in phpmyadmin ad then creating a new database and importing it to the new database.
But I guess there must be a more efficient way of doing this task via SQL query like that one for cloning tables.
IMPORTANT! It need to be done from SQL query window in phpmyadmin and not from a shell command line.
Thanks in advance for you suggestion how to do that.
have you tried using MySQL Dump?
$ mysqldump yourFirstDatabase -u user -ppassword > yourDatabase.sql
$ echo "create database yourSecondDatabase" | mysql -u user -ppassword
$ mysql yourSecondDatabase -u user -ppassword < yourDatabase.sql
IMPORTANT! It need to be done from SQL query window in phpmyadmin and not from a shell command line.
First create a blank database:
CREATE DATABASE `destination` DEFAULT CHARACTER SET
latin1 COLLATE latin1_swedish_ci;
Then use the command show tables;
show source.tables;
and then run the command for each DB table (Optimized Create table and inserting rows) as:
create table destination.table select * from source.table;
and other way is using like command:
create table destination.table like source.table
and then inserting rows;
insert into destination.table select * from source.table
If phpMyAdmin is available for the database, you can clone it by following these steps:
Select required database
Click on the operation tab
In the operation tab, go to the "copy database"-option and type your desired clone-db-name into the input field
Select "Structure and data" (Depends on your requirement)
Check the boxes, "CREATE DATABASE before copying" and "Add AUTO_INCREMENT value"
Click "GO"
Tested with phpMyAdmin 4.2.13.3
export your chosen database using phpmyadmin (export.sql)
import it using terminal/cmd:
mysql -u username -p databasename < export.sql
and get a cup of coffee...
mysql> -u username -p [database] < file.sql
restores database. I do not have a create clause in my dumped file, hence I need to create a database and then restore. I can do this to create.
mysql> create database [database];
Fair enough. Now how can I achieve the above restoration in one line? Is there anyway to restore a database by creating the database before that with a single line of code?
I can certainly live without it, but would be nice to know.. Thanks..
(echo "create database XYZ; use XYZ;"; cat file.sql) | mysql -u username -p
could do the trick.
I was given a MySQL database file that I need to restore as a database on my Windows Server 2008 machine.
I tried using MySQL Administrator, but I got the following error:
The selected file was generated by
mysqldump and cannot be restored by
this application.
How do I get this working?
If the database you want to restore doesn't already exist, you need to create it first.
On the command-line, if you're in the same directory that contains the dumped file, use these commands (with appropriate substitutions):
C:\> mysql -u root -p
mysql> create database mydb;
mysql> use mydb;
mysql> source db_backup.dump;
It should be as simple as running this:
mysql -u <user> -p < db_backup.dump
If the dump is of a single database you may have to add a line at the top of the file:
USE <database-name-here>;
If it was a dump of many databases, the use statements are already in there.
To run these commands, open up a command prompt (in Windows) and cd to the directory where the mysql.exe executable is (you may have to look around a bit for it, it'll depend on how you installed mysql, i.e. standalone or as part of a package like WAMP). Once you're in that directory, you should be able to just type the command as I have it above.
You simply need to run this:
mysql -p -u[user] [database] < db_backup.dump
If the dump contains multiple databases you should omit the database name:
mysql -p -u[user] < db_backup.dump
To run these commands, open up a command prompt (in Windows) and cd to the directory where the mysql.exe executable is (you may have to look around a bit for it, it'll depend on how you installed mysql, i.e. standalone or as part of a package like WAMP). Once you're in that directory, you should be able to just type the command.
mysql -u username -p -h localhost DATA-BASE-NAME < data.sql
look here - step 3: this way you dont need the USE statement
When we make a dump file with mysqldump, what it contains is a big SQL script for recreating the databse contents. So we restore it by using starting up MySQL’s command-line client:
mysql -uroot -p
(where root is our admin user name for MySQL), and once connected to the database we need commands to create the database and read the file in to it:
create database new_db;
use new_db;
\. dumpfile.sql
Details will vary according to which options were used when creating the dump file.
Run the command to enter into the DB
# mysql -u root -p
Enter the password for the user Then Create a New DB
mysql> create database MynewDB;
mysql> exit
And make exit.Afetr that.Run this Command
# mysql -u root -p MynewDB < MynewDB.sql
Then enter into the db and type
mysql> show databases;
mysql> use MynewDB;
mysql> show tables;
mysql> exit
Thats it ........ Your dump will be restored from one DB to another DB
Or else there is an Alternate way for dump restore
# mysql -u root -p
Then enter into the db and type
mysql> create database MynewDB;
mysql> show databases;
mysql> use MynewDB;
mysql> source MynewDB.sql;
mysql> show tables;
mysql> exit
If you want to view the progress of the dump try this:
pv -i 1 -p -t -e /path/to/sql/dump | mysql -u USERNAME -p DATABASE_NAME
You'll of course need 'pv' installed. This command works only on *nix.
I got it to work following these steps…
Open MySQL Administrator and connect to server
Select "Catalogs" on the left
Right click in the lower-left box and choose "Create New Schema"
MySQL Administrator http://img204.imageshack.us/img204/7528/adminsx9.th.gif enlarge image
Name the new schema (example: "dbn")
MySQL New Schema http://img262.imageshack.us/img262/4374/newwa4.th.gif enlarge image
Open Windows Command Prompt (cmd)
Windows Command Prompt http://img206.imageshack.us/img206/941/startef7.th.gif enlarge image
Change directory to MySQL installation folder
Execute command:
mysql -u root -p dbn < C:\dbn_20080912.dump
…where "root" is the name of the user, "dbn" is the database name, and "C:\dbn_20080912.dump" is the path/filename of the mysqldump .dump file
MySQL dump restore command line http://img388.imageshack.us/img388/2489/cmdjx0.th.gif enlarge image
Enjoy!
As a specific example of a previous answer:
I needed to restore a backup so I could import/migrate it into SQL Server. I installed MySql only, but did not register it as a service or add it to my path as I don't have the need to keep it running.
I used windows explorer to put my dump file in C:\code\dump.sql. Then opened MySql from the start menu item. Created the DB, then ran the source command with the full path like so:
mysql> create database temp
mysql> use temp
mysql> source c:\code\dump.sql
You can try SQLyog 'Execute SQL script' tool to import sql/dump files.
Using a 200MB dump file created on Linux to restore on Windows w/ mysql 5.5 , I had more success with the
source file.sql
approach from the mysql prompt than with the
mysql < file.sql
approach on the command line, that caused some Error 2006 "server has gone away" (on windows)
Weirdly, the service created during (mysql) install refers to a my.ini file that did not exist. I copied the "large" example file to my.ini
which I already had modified with the advised increases.
My values are
[mysqld]
max_allowed_packet = 64M
interactive_timeout = 250
wait_timeout = 250
./mysql -u <username> -p <password> -h <host-name like localhost> <database-name> < db_dump-file
You cannot use the Restore menu in MySQL Admin if the backup / dump wasn't created from there. It's worth a shot though. If you choose to "ignore errors" with the checkbox for that, it will say it completed successfully, although it clearly exits with only a fraction of rows imported...this is with a dump, mind you.
One-liner command to restore the generated SQL from mysqldump
mysql -u <username> -p<password> -e "source <path to sql file>;"
Assuming you already have the blank database created, you can also restore a database from the command line like this:
mysql databasename < backup.sql
You can also use the restore menu in MySQL Administrator. You just have to open the back-up file, and then click the restore button.
If you are already inside mysql prompt and assume your dump file dump.sql, then we can also use command as below to restore the dump
mysql> \. dump.sql
If your dump size is larger set max_allowed_packet value to higher. Setting this value will help you to faster restoring of dump.
How to Restore MySQL Database with MySQLWorkbench
You can run the drop and create commands in a query tab.
Drop the Schema if it Currently Exists
DROP DATABASE `your_db_name`;
Create a New Schema
CREATE SCHEMA `your_db_name`;
Open Your Dump File
Click the Open an SQL script in a new query tab icon and choose your db dump file.
Then Click Run SQL Script...
It will then let you preview the first lines of the SQL dump script.
You will then choose the Default Schema Name
Next choose the Default Character Set utf8 is normally a safe bet, but you may be able to discern it from looking at the preview lines for something like character_set.
Click Run
Be patient for large DB restore scripts and watch as your drive space melts away! 🎉
Local mysql:
mysql -u root --password=YOUR_PASS --database=YOUR_DB < ./dump.sql
And if you use docker:
docker exec -i DOCKER_NAME mysql -u root --password=YOUR_PASS --database=YOUR_DB < ./dump.sql