I have a .sql file with some database backups inside. Now I want to restore them back to MySQL. How can I this using command line of MySqL please? I found this:
mysql -u username -p -h localhost database_name < dumpfile.sql
but I don't know what username should be, what database_name should be and how I could browse to a .sql file in another folder.
You need to replace username with your database username and it will prompt you for a password. If the dump file has the "create database [name];" and "use [name];" instructions then you dont need to specify the database_name attribute.
To pull the .sql from another folder you just need to specify the path (/home/user/Downloads/file.sql, for example).
You could also try downloading mysql administrator from the mysql website.
Check this link too
http://www.techiecorner.com/31/how-to-restore-mysql-database-from-sql-dump-file/
Redirecting a .sql file into the MySQL CLI works because that's the format that mysqldump produces. And people usually call mysqldump to dump a whole database, so they get one file afterwards.
The username and password are dependant on what's been setup on the database instance you want to reload the data in to. On a clean, empty install, the MySQL root user will work (and probably won't have a password). On an established install, you should find an appropriate user. The user you use will need substantial permissions as it needs to create and write to tables.
The .sql file may have CREATE database and USE database statements near the top. If this is present, then make sure that database does not exist before you pipe the file in. If not, you will need to find out what name is expected by whatever program will be using the database.
As for piping another file in in a different directory, this is simple shell notation. The < filename notation fully supports paths so you can do < some/other/path/filename.sql or < ~/sql/filename.sql, for example. (Note that I've assumed you're using a Unix shell.)
You can use cmd
type cmd run as adminstration (C:\windows\system32>)
give path of mysql of bin folder (C:\windows\system32>
cd `C:\xampp\mysql\bin)
C:\xampp\mysql\bin>mysql -u username -p -h localhost database_name
type-> use database_name
type-> source F:/example.sql
Related
I have a backup.mysql file that I created using mysqldump.
How can I use that to restore the database? I opened the file in Sublime Text, and here is what its beginning looks like!
The dump you produced is a SQL script you can run with any tool you want. As OP from this question How do I restore a dump file from mysqldump?, if you try to restore it with MySQL Administrator or other software providing specific backup/restore functions, it can throw an error because it asks for a particular format (his own format); but if the dump has been produced correctly, you can run it with any MySQL client, for example with the command line tool :
mysql -h hostname -u username -p yourschema < ./path/to/the/script.mysql
Copy your backup.sql file to the working directory: C:\xampp\mysql\bin. (or whatever your path)
In your command prompt or terminal switch to the MySQL directory. cd c:\xampp\mysql\bin (or whatever your path)
Open the MySQL Database system mysql –h localhost –u root (or whatever your credentials)
You need to re-grant permissions: GRANT ALL ON your_db_here.* to 'root'#'localhost'; (or whatever your credentials)
You need to re-create the database: CREATE DATABASE your_db_here;
Start using the database: USE your_db_here;
Import the dump file that you created: source backup.mysql
Using DESCRIBE commands and "SELECT * FROM" commands ensure that your database has been restored properly.
This question already has answers here:
How do I rename a MySQL database (change schema name)?
(46 answers)
Closed 8 years ago.
I created a database with the name of hrms. Now I need to change database name to sunhrm. But, It is disabled in MySQL workbench. Can I do that on the Linux server itself?
In case you need to do that from the command line, just copy, adapt & paste this snippet:
mysql -e "CREATE DATABASE \`new_database\`;"
for table in `mysql -B -N -e "SHOW TABLES;" old_database`
do
mysql -e "RENAME TABLE \`old_database\`.\`$table\` to \`new_database\`.\`$table\`"
done
mysql -e "DROP DATABASE \`old_database\`;"
I don't think you can do this. Basic answers will work in many cases, and in others cause data corruptions. A strategy needs to be chosen based on heuristic analysis of your database. That is the reason this feature was implemented, and then removed. [doc]
You'll need to dump all object types in that database, create the newly named one and then import the dump. If this is a live system you'll need to take it down. If you cannot, then you will need to setup replication from this database to the new one.
If you want to see the commands that could do this, #satishD has the details, which conveys some of the challenges around which you'll need to build a strategy that matches your target database.
It's possible to copy database via mysqldump command without storing dump into file:
mysql -u root -p -e "create database my_new_database"
mysqldump -u root -p original_database | mysql -u root -p my_new_database
mysql -u root -p -e "drop database original_database"
You can create a new database exactly as the previous database existed and then drop the old database when you're done. Use the mysqldump tool to create a .sql backup of the database via mysqldump orig_db > orig_db.sql or if you need to use a username and password then run mysqldump -u root -p orig_db > orig_db.sql. orig_db is the name of the database you want to "rename", root would be the user you're logging in as and orig_db.sql would be the file created containing the backup. Now create a new, empty database with the name you want for the database. For example, mysql -u root -p -e "create database new_db". Once that's done, then run mysql -u root -p new_db < orig_db.sql. new_db now exists as a perfect copy of orig_db. You can then drop the original database as you now have it existing in the new database with the database name you wanted.
The short, quick steps without all the above explanation are:
mysqldump -u root -p original_database > original_database.sql
mysql -u root -p -e "create database my_new_database"
mysql -u root -p my_new_database < original_database.sql
mysql -u root -p -e drop database originl_database
Hope this helps and this is a reliable means to accomplish it without using some ad-hoc method that will corrupt your data and create inconsistencies.
You can do it by RENAME statement for each table in your "current_db" after create the new schema "other_db"
RENAME TABLE current_db.tbl_name TO other_db.tbl_name
Source Rename Table Syntax
In short no. It is generally thought to be too dangerous to rename a database. MySQL had that feature for a bit, but it was removed. You would be better off using the workbench to export both the schema and data to SQL then changing the CREATE DATABASE name there before you run/import it.
I used following method to rename the database
take backup of the file using mysqldump or any DB tool eg heidiSQL,mysql administrator etc
Open back up (eg backupfile.sql) file in some text editor.
Search and replace the database name and save file.
Restore the edited SQL file
If your DB contains only MyISAM tables (do not use this method if you have InnoDB tables):
shut down the MySQL server
go to the mysql data directory and rename the database directory (Note: non-alpha characters need to be encoded in a special way)
restart the server
adjust privileges if needed (grant access to the new DB name)
You can script it all in one command so that downtime is just a second or two.
For impatient mysql users (like me), the solution is:
/etc/init.d/mysql stop
mv /var/lib/mysql/old_database /var/lib/mysql/new_database
/etc/init.d/mysql start
First backup the old database called HRMS and edit the script file with replace the word HRMS to SUNHRM. After this step import the database file to the mysql
Another way to rename the database or taking image of the database is by using Reverse engineering option in the database tab. It will create a ERR diagram for the database. Rename the schema there.
after that go to file menu and go to export and forward engineer the database.
Then you can import the database.
I don't know much about MySQL at all. But I am trying to reverse engineer a MySQL database using Visio. I know what steps I should take to do this, but I can't get my database to show in the 'Databases' section (as below):
How do I create the MySQL database using the .SQL file and get it to show up in this list? I have tried this code:
mysql -u username -p password database_name < filename.sql
using my own credentials of course. But that doesn't seem to work. In what folder should the .SQL file be placed if this statement is to work?
1) Create a file "filename.sql"
2) Create a database in your DB in which you want to import this file.
3) From command-prompt/terminal, move to the directory where you have created a "filename.sql".
4) Run the command: mysql -u username -p password database_name < filename.sql. (You can also give the proper path of your file and run this command from anywhere). It might be the case that you don't have a password set for MySQL. If so, mysql -u username database_name < filename.sql will also work.
In your case if you have created a database with name ojs and also created a file with name ojs.sql in C: drive then run the following command:
Edit: Put the path inside quotes.
mysql -u username -p password ojs < "C:\ojs.sql"
There is another way of importing tables in mysql. You can do it this way as well:
1) Connect your database
2) Type command "use ojs;"
3) Type command "source C:/ojs.sql"
Most MySQL SQL files that create databases create the database 'on-the-fly', so you typically needn't do anything except:
log-in
mysql -u [username] -p[password]
(Note: make sure you do NOT include a space (' ') character between the -p and the [password].
MySQL will think that [password] is the name of the database you want to connect to.
The 'general' log-in (above) does not assume you want to connect to any particular schema.)
source the file (do not use quotes around filename)
mysql> source [database_creation_file].sql
you can simply do it using mysql workbench
1> create a new query tab
2> CREATE DATABASE database_name;
3> USE database_name;
4> open the filename.sql file and execute it ctrl + shift + enter
5> all the tables in the filename.sql are created
To create a MySQL database using a SQL file, you can follow these steps:
Log in to your MySQL server using the mysql command-line tool and the appropriate credentials.
Use the CREATE DATABASE command to create a new database with the desired name:
CREATE DATABASE database_name;
Use the USE command to switch to the newly created database:
USE database_name;
Use the SOURCE command to import the SQL file into the database:
SOURCE path/to/sql/file;
The database will now be created and populated with the data from the SQL file. You can verify this by running some SQL queries against the database.
It's important to note that this process assumes that the SQL file contains valid SQL statements compatible with the version of MySQL you are using. If the SQL file contains any errors or unsupported statements, they will be displayed in the mysql command-line tool, and the import process will be interrupted.
Any idea how to do this restore ?
I looked into help of mysqldump but couldn't see it there .
If so can you give me some example.
With mysqldump you will generate a script you can use for restore on a different computer like this:
$ mysql -U user_name < your_backup.sql
Run on your favorite shell (windows command prompt, bash, csh...).
I think you can use CMD to navigate to the mysqldump location, then type this command,
mysqldump database_name -u username >location\to\save\dump.sql
change database_name to the database you want to backup, username to the username associated with the database, and location\to\save\dump.sql to the location where you want to save the output sql file, for me I wrote it D:\dump.sql
Then on the other machine you can import the SQL file using the PHPMyAdmin.
You can just execute the SQL using the mysql command-line command. There is a switch to specify which file to import, I think it is -I but I'm not sure.
It's just plain SQL. Pass the file to mysql (the mysql command line tool) and it will execute it:
mysql < backup.sql
From the shell prompt, using
parameters form the mysqldump
doc, mysqldump the database using a > redirect to a
human readable .sql file. E.g.
$ mysqldump --databases src_db > src_db.sql
Transfer the human readable file to
another machine.
After making sure the destination database exists has been created, redirect < the .sql file into the destination database.
$ mysql dest_db < src_db.sql
I have a MySQL file, db.sql. I have tried to import it using:
mysql -uroot -p[password] db < db.sql
All I get is a listing of mysql commands, or I get a syntax error. The weird thing is I used this file last week and, as far as I know, I'm doing it the same way.
I create the database, then in command line enter the above but it's not working. I've tried being inside mysql and just at command line and nothing seems to be working.
Is there something I should be doing differently in windows or MySQL5? I don't know how the heck I got it to work the first time...
TIA
Try this instead:
mysql -u root -p
(prompts for password)
use db;
source db.sql
I found out it is different to run this command from Windows Command Line (cmd.exe) and Windows PowerShell.
Using CMD.exe the command works okay, but in PowerShell I get this error:
mysql -uroot exampledb < exampledb.sql
The '<' operator is reserved for future use.
Not sure if your example was a typo or not, but for starters you need to have a space in between your flags and their values, roughly like this:
mysql -u root -p [password] db < db.sql
If you are already logged in the try this it will be very useful, but depend upon the MySQL version, it works on MySQL 5.0
For log in if you are not already logged in.
mysql>[your password]
Other wise, use the database to which you want to import the SQLDump file by command.
mysql>use [your database name]
And then give source the database Dump file path as blow command(If not works the copy Dump database file to the bin folder where the MySQL installed for eg. "C:/programfiles/mysql/mqlserver5.0/bin")
mysql> source [dataBasePath+name.sql or dataBaseName.sql]
I've been using PHP script called "BigDump":
http://www.ozerov.de/bigdump.php
This perfectly works
mysql>[your password]
Other wise, use the database to which you want to import the SQLDump file by command.
mysql>use [your database name]
And then give source the database Dump file path as blow command(If not works the copy Dump database file to the bin folder where the MySQL installed for eg. "C:/programfiles/mysql/mqlserver5.0/bin")
mysql> source [dataBasePath+name.sql or dataBaseName.sql]EG: source C:.....sql
I am using mysql server 5.5
In Windows PowerShell, you can pipe in the contents like so:
Get-Content db.sql | mysql -u root -p [password]