mysqldump(1)

NAME
mysqldump - text-based client for dumping or backing up mysql databases , tables and or data.

USAGE
mysqldump [OPTIONS] database [tables]

OR  mysqldump [OPTIONS] --databases [OPTIONS] DB1 [DB2 DB3...]

OR  mysqldump [OPTIONS] --all-databases [OPTIONS]

OPTION SYNOPSIS
mysqldump [-A|--all-databases] [-a|--all] [-#|--debug=...] [--character-sets-dir=...] [-?|--help] [-B|--databases] [-c|--complete-insert] [-C|--compress] [--default-character-set=...] [-e|--extended-insert] [--add-drop-table] [--add-locks] [--allow-keywords] [--delayed-insert] [-F|--flush-logs] [-f|--force] [-h|--host=...] [-l|--lock-tables] [-n|--no-create-db] [-t|--no-create-info] [-d|--no-data] [-O|--set-variablevar=option] [--opt] [-p|--password[=...]] [-P|--port=...] [-q|--quick] [-Q|--quote-names] [-S|--socket=...] [--tables] [-T|--tab=...] [-u|--user=#] [-v|--verbose] [-V|--version] [-w|--where=] [--delayed] [-e|--extended-insert] [--fields-terminated-by=...] [--fields-enclosed-by=...] [--fields-optionally-enclosed-by=...] [--fields-escaped-by=...] [--lines-terminated-by=...] [-v|--verbose] [-V|--version] [-O net_buffer_length=#, where # < 16M]

DESCRIPTION
Dumping definition and data mysql database or table mysqldump supports by executing

-A|--all-databases
    Dump all the databases. This will be same as --databases with all databases selected.

-a|--all
    Include all MySQL specific create options.

-#|--debug=...
    Output debug log. Often this is 'd:t:o,filename`.

--character-sets-dir=...
    Directory where character sets are

-?|--help
    Display this help message and exit.

-B|--databases
    To dump several databases. Note the difference in usage; In this case no tables are given. All name arguments are regarded as databasenames.

-c|--complete-insert
    Use complete insert statements.

-C|--compress
    Use compression in server/client protocol.

--default-character-set=...
    Set the default character set

-e|--extended-insert
    Allows utilization of the new, much faster INSERT syntax.

--add-drop-table
    Add a 'drop table' before each create.

--add-locks
    Add locks around insert statements.

--allow-keywords
    Allow creation of column names that are keywords.

--delayed-insert
    Insert rows with INSERT DELAYED.

-F|--flush-logs
    Flush logs file in server before starting dump.

-f|--force
    Continue even if we get an sql-error.

-h|--host=...
    Connect to host.

-l|--lock-tables
    Lock all tables for read.

-n|--no-create-db
    'CREATE DATABASE /*!32312 IF NOT EXISTS*/ db_name;' will not be put in the output. The above line will be added otherwise, if --databases or --all-databases option was given.

-t|--no-create-info
    Don't write table creation info.

-d|--no-data
    No row information.

-O|--set-variable var=option
    give a variable a value. --help lists variables

--opt
    Same as --add-drop-table --add-locks --all --extended-insert --quick --lock-tables

-p|--password[=...]
    Password to use when connecting to server. If password is not given it's solicited on the tty.

-P|--port=...
    Port number to use for connection.

-q|--quick
    Don't buffer query, dump directly to stdout.

-Q|--quote-names
    Quote table and column names with `

-S|--socket=...
    Socket file to use for connection.

--tables
    Overrides option --databases(-B).

-T|--tab=...
    Creates tab separated textfile for each table to given path. (creates .sql and .txt files). NOTE: This only works if mysqldump is run on the same machine as the mysqld daemon.

-u|--user=#
    User for login if not current user.

-v|--verbose
    Print info about the various stages.

-V|--version
    Output version information and exit.

-w|--where=
    dump only selected records; QUOTES mandatory!

--delayed
    Insert rows with the INSERT DELAYED command.

-e|--extended-insert
    Use the new multiline INSERT syntax. (Gives more compact and faster inserts statements.)

--fields-terminated-by=...

--fields-enclosed-by=...

--fields-optionally-enclosed-by=...

--fields-escaped-by=...

--lines-terminated-by=...
    These options are used with the -T option and have the same meaning as the corresponding clauses for LOAD DATA INFILE. See Mysql manual section 7.23 LOAD DATA INFILE Syntax.

-v|--verbose
    Verbose mode. Print out more information on what the program does.

-V|--version
    Print version information and exit.

-O net_buffer_length=#, where # < 16M
    When creating multi-row-insert statements (as with option --extended-insert or --opt ), mysqldump will create rows up to net_buffer_length length. If you increase this variable, you should also ensure that the max_allowed_packet variable in the MySQL server is bigger than the net_buffer_length.

EXAMPLES

The most normal use of mysqldump is probably for making a backup of whole databases. See Mysql Manual section 21.2 Database Backups.

mysqldump  --opt database > backup-file.sql

You can read this back into MySQL with:

mysql
    database < backup-file.sql

or

mysql
    -e 'source /patch-to-backup/backup-file.sql' database

However, it's also very useful to populate another MySQL server with information from a database:

mysqldump --opt database | mysql --host=remote-host -C database

It is possible to dump several databases with one command:

mysqldump --databases database1 [ database2 database3... ]  > my_databases.sql

If all the databases are wanted, one can use:

mysqldump --all-databases > all_databases.sql

SEE ALSO
isamchk (1), isamlog (1), mysqlaccess (1), mysqladmin (1), mysqlbug (1), mysqld (1), mysqldump (1), mysqlshow (1), msql2mysql (1), perror (1), replace (1), mysqld_safe (1), which1 (1), zap (1),

AUTHOR
Ver 1.0, distribution 3.23.29a Michael (Monty) Widenius (monty@tcx.se), TCX Datakonsult AB (http://www.tcx.se). This software comes with no warranty. Manual page by L. (Kill-9) Pedersen (kill-9@kill-9.dk), Mercurmedia Data Model Architect / system developer (http://www.mercurmedia.com)