MYSQLDUMP

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

mysqldump [OPTIONS] database [tables]

OR

mysqldump [OPTIONS] −−databases [OPTIONS] DB1 [DB2 DB3...]

OR

mysqldump [OPTIONS] −−all-databases [OPTIONS]

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]

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

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−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.

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

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

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)