I'm trying to import a gzipped SQL file into mysql directly. Is this the right way?
mysql -uroot -ppassword mydb > myfile.sql.gz
Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.Visit Stack Exchange
Server Fault is a question and answer site for system and network administrators. It only takes a minute to sign up.Sign up to join this community
zcat /path/to/file.sql.gz | mysql -u 'root' -p your_database
> will write the output of the
mysql command on
stdout into the file
myfile.sql.gz which is most probably not what you want. Additionally, this command will prompt you for the password of the MySQL user "root".
~/.my.cnfwith the credentials. ;)
zcat /path/to/file.sql.gz | mysql -u 'root' -p your_database. It will know the last parameter is the database you wish to use, not your password.
To display a progress bar while importing a sql.gz file, download
pv and use the following:
pv mydump.sql.gz | gunzip | mysql -u root -p <database name>
In CentOS/RHEL, you can install pv with
yum install pv.
apt-get install pv.
brew install pv
pvseems to be in the Ubuntu repos too (at least in 12.04 LTS it is), but again you need to do
sudo apt-get install pvto get it. Thanks Banjer, this is perfect for big database imports!
brew install pv
The simplest way is to unzip the database file before importing. Also as mentioned by @Prof. Moriarty you shouldn't be specifying the password in the command (you'll be asked for the password). This command taken from webcheatsheet will unzip and import the database in one go:
gunzip < myfile.sql.gz | mysql -u root -p mydb
gunzipon a 10GB compressed file caused my import to freeze. not sure if that's due to memory constraints or something but i'd err on the side of doing one step at a time in the future.
If you get an error from
zcat, in which the error message contains the file name with an extra suffix
.Z, then try using
gzcat instead, as described at https://stackoverflow.com/questions/296717/zcat-wont-unzip-files-properly
On macOS, I used this:
zcat < [Database].sql.gz | mysql -u root -p [Database Name in MySQL]
Enter your password, and voila!
You can use
-c, --stdout, --to-stdout option of
gunzip -c file.sql.gz | mysql -u root -p database
Also check if there is any USE-statement in the SQL file. Specifying the database at the command line doesn't guarantee that the data ends up there if a different destination is specified within the SQL file.
pv mydump.sql.gz | gunzip | mysql -u root -p
your_database. The accepted answer uses this approach.
If you are using small size database it's better to extract and import. Here is the extract command
tar -xf dbname.sql.tar.gz
Here is importing command.
mysql -u username -p new_database < data-dump.sql
On MacOS I've been using the following one-liner with no need of installing additional programs, except for the MySQL client itself.
$ cat /path/to/file.sql.gz | gzip -d | mysql -u root <db_name>
The first command,
cat, prints the file. Its output, the file contents, is sent as the input to the next command,
gzip with the the
-d option decompresses the input passed to it and outputs the result, which is finally used as input for the MySQL client, the
mysql program. The output -> input sending is brought to us by the
| (pipe) operator on bash and other shell.
This script can also be used in some popular Linux distros, such as Ubuntu. I'm not sure whether
gzip is always available. But it can be easily installed, if not, with:
$ sudo apt install gzip
For bzip2 compressed files (.sql.bz2), use:
bzcat <file> | mysql -u <user> -p <database>
pv <file> | bunzip2 | mysql -u <user> -p <database>
to see progress bar.
Lets say you need to populate user_data with mysql, try this:
export DEBIAN_FRONTEND=noninteractive \ apt-get update -yq dpkg -l | grep mysql-server || (echo "Installing MySQL..." \ && apt-get install -yq mysql-server \ && echo -e "\n[mysqld]\nbind-address=0.0.0.0\nskip-name-resolve=1" | tee -a /etc/mysql/my.cnf \ && aws s3 cp --quiet s3://your-bucket/mysqldump_all_databases.sql.gz - | zcat | mysql -uroot\ && systemctl restart mysql)
If you are using windows, you can install gzip from chocolatey:
choco install gzip -y
or download gzip from this link: http://gnuwin32.sourceforge.net/packages/gzip.htm
After gzip installed run this command:
gzip -cd c:\backups\myDbBackup.sql.gz | mysql -u[user] -p[password] [myDataBase]
To export in
.sql.qz command is :-
mysqldump -u username -p database | gzip > database.sql.gz
To import the
.sql.qz file command is:-
gunzip < database.sql.gz | mysql -u usrname -p newdatabase