I have a mysqldump of all my databases from all projects created like this:
mysqldump -u username -h localhost --all-databases | gzip -9 > alldb.sql.gz
I now want to copy a specific database of a specific project (project1) of this alldb.sql file (which I have already gunzipped). I need to copy the project1_production database into the anotherproject_development database of an application I'm currently developing.
What is the easiest way to copy (and overwrite if entries already exist) the project1_production database of the alldb.sql file into the anotherproject_development database of my application I'm currently developing?
mysql -D mydatabase -o < dump.sql
A so thread is here
Related
I need to migrate my database from my old server to my new server. I have a very big problem by transferring the database because I have a large database with 5gb. I tried to transfer using c panel transfer but I can't it is not useful. I need a more efficient way to transfer the data.
Can anyone guide me with the full transfer details? How to transfer using import and export or do I need to use any other method?
MySQL type is MyISAM and size is 5gb.
You can try command line if you have access to SSH for both server as command below if not you can try using Navicat application to sync databases
SSH commands
Take mysqldump of database
http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html
create tar ball of SQL dump file using
tar -zcvf db.tar.gz db.sql
now upload tar.gz file to other server using scp command
scp -Cp db.gz {username}#{server}:{path}
now login on other server using SSH
Untar file using linux cmd
tar -zxvf db.tar.gz
import to database
mysql -u{username} -p {database} < db.sql
Please have a look at syntax though syntax will work but consider this as direction only
Thanks..
For large databases I would suggest to use mysqldump if you have SSH access to the server.
From the manual:
Use mysqldump --help to see what options are available.
The easiest (although not the fastest) way to move a database between two machines is to run the following commands on the machine on which the database is located:
shell> mysqladmin -h 'other_hostname' create db_name
shell> mysqldump db_name | mysql -h 'other_hostname' db_name
If you want to copy a database from a remote machine over a slow network, you can use these commands:
shell> mysqladmin create db_name
shell> mysqldump -h 'other_hostname' --compress db_name | mysql db_name
You can also store the dump in a file, transfer the file to the target machine, and then load the file into the database there. For example, you can dump a database to a compressed file on the source machine like this:
shell> mysqldump --quick db_name | gzip > db_name.gz
Transfer the file containing the database contents to the target machine and run these commands there:
shell> mysqladmin create db_name
shell> gunzip < db_name.gz | mysql db_name
You can also use mysqldump and mysqlimport to transfer the database. For large tables, this is much faster than simply using mysqldump. In the following commands, DUMPDIR represents the full path name of the directory you use to store the output from mysqldump.
First, create the directory for the output files and dump the database:
shell> mkdir DUMPDIR
shell> mysqldump --tab=DUMPDIR db_name
Then transfer the files in the DUMPDIR directory to some corresponding directory on the target machine and load the files into MySQL there:
shell> mysqladmin create db_name # create database
shell> cat DUMPDIR/*.sql | mysql db_name # create tables in database
shell> mysqlimport db_name DUMPDIR/*.txt # load data into tables
Do not forget to copy the mysql database because that is where the grant tables are stored. You might have to run commands as the MySQL root user on the new machine until you have the mysql database in place.
After you import the mysql database on the new machine, execute mysqladmin flush-privileges so that the server reloads the grant table information.
I created a database using Mysql Workbench. Now I want to export this database to my home PC.
How can I do this if the 2 PCs have no network connection?
I use mysqldump to export the database. You can use something like
mysqldump -u [username] -p [database name] > backup.sql
to store it in a file. After that you can import into another database via
mysql -u [username] -p [database name] < backup.sql
As edit was rejected posting it as an answer; hope it will be helpful.
Followed to the queries give by "Marc Hauptmann" -
Few quick-tips for generic issues that can be faced while performing DB dump and restore:-
As correctly mentioned above by "Marc" it is always advised not to provide db password in command line export [if you do so, it can be easily sniffed in history or reverse-search]
If you are transferring large dump file it is advised to compress it before transferring. [it should be uncompressed before restore]
While exporting if you want to export data with 'new database name' it can also be done. [It will require new Db to be created before using it in import]
Also if we are exporting data from production servers to make sure it doesn't impact performance, export from other servers with below additional option "-h [hostname]"
mysqldump -h [hostname] -u [username] -p [database name] > backup.sql
Using gzip is pretty painless and really shrinks these files.
mysqldump -u [uname] -p[pass] [dbname] | gzip -9 > [backupfile.sql.gz]
gunzip < [backupfile.sql.gz] | mysql -u [uname] -p[pass] [dbname]
But man, it is 2014 - this stuff is also easy to do via a secure shell connection.
I have a large sql file (500mb) and want to split it in chunks.
I used the shell command split but it doesn't split context-aware before a special pattern (e.g. INSERT) and thus breaks the SQL statement.
The aim is to have two 250mb files both still containing only valid SQL commands. Is this possible?
Use:
mysqldump -u admin -p database1 > /backup/db/database1.sql
or
mysqldump -u admin -p --all-databases > /backup/db/all_databases.sql
If you have only MyISAM tables you can use:
mysqlhotcopy -u admin -p password123 database1 /backup
for faster backups. mysqlhotcopy doesn't generating sql but copying the files of the database.
For recovery of mysqldumped databases use:
mysql -u admin -p database1 < database.sql
or
mysql -u admin -p <all_databases.sql
For mysqlhotcopy:
To restore the backup from the mysqlhotcopy backup, simply copy the files from the backup directory to the /var/lib/mysql/{db-name} directory. Just to be on the safe-side, make sure to stop the mysql before you restore (copy) the files. After you copy the files to the /var/lib/mysql/{db-name} start the mysql again.
See here: http://www.thegeekstuff.com/2008/07/backup-and-restore-mysql-database-using-mysqlhotcopy/
I am doing some prototyping and so created a database with a few tables and dependencies. The project became bigger than I thought and now want to clean up the names, dependencies etc and so want to create the DB anew. But I don't want to go through the whole process of creating individual tables again, instead I want to start with what I have, clean the creation scripts up and run them if possible. Is there a way I can export all the scripts to create the DB and tables? Are there tools or mysql command line options to do this?
Thanks,
-S
This can get you started:
mysqldump -u user -ppassword -h host --no-create-db --no-data [other options] old_database > dump.sql
then you can edit the dump file for any necessary changes and import back into the new database:
mysql -u user -ppassword -h host new_database < dump.sql
More information about the mysqldump #MySQL Reference Manual
I recommend you to look at MySql WorkBench
It can do everything you need
Here's the list of all the features
Reverse Engineer from Live Database
Reverse Engineer from SQL Script
Also, good to mention that it's free (community version)
I am attempting to restore my mysql database to my website, and all of the tables in my database get dropped into individual files, so I am trying to figure out how can I restore all of the database .sql files through SSH with a single (or easy command) instead of restoring all 100 tables individually.
cat *.sql > data.sql
mysql -u <username> -p < data.sql
It depends on how you created the individual files - if they have all the instructions for recreating the tables (i.e., "Drop if exists...", "Create ...", and "Insert into ..."), then you can either concatenate them into mysql:
cat *.sql | mysql -u xxx -pxxx dbname
or write a script to do it
#!/bin/sh
mysql -u xxx -pxxx dbname < file001.sql
mysql -u xxx -pxxx dbname < file002.sql
The second choice lets you more easily control the order of files processed.
Finally, you might want to create your backups in a more convenient way - check out mysqldump for how to dump a database (or several!) into one file (basically, "mysqldump -u xxx -pxxx dbname > dbname.sql", but there are some helpful flags you might want to add).