oak-modify-charset: openark kit documentation

oak-modify-charset

NAME

oak-modify-charset: change the character set (and collation) of a textual column.

SYNOPSIS

Change the character set of the Name column of the world.City table to utf8 (apply default collation):

oak-modify-charset world.City.Name utf8

Change the character set of the Name column of the world.City table to utf8 and specify the collation:

oak-modify-charset world.City.Name utf8 utf8_bin

Same as above, do not actually perform the ALTER, just print it to standard output.

oak-modify-charset --print-only world.City.Name utf8 utf8_bin

As above, provide connection parameters, prompt for password:

oak-modify-charset --user=root --ask-pass --socket=/tmp/mysql.sock world.City.Name utf8 utf8_bin

As above, use defaults file:

oak-modify-charset --defaults-file=/home/myuser/.my-oak.cnf world.City.Name utf8 utf8_bin

DESCRIPTION

oak-modify-charset enables a safe way to convert a column's character set, while retaining its other properties, such as its NULLability or default value. It uses ALTER TABLE to achieve this, and you must have the ALTER privilege on the given table to do so (usually reserved to user 'root'). The tool verifies that the column is indeed of textual type (CHAR, VARCHAR, TEXT and variances), otherwise it reports an error. With --print-only, nothing is actually performed: instead, the ALTER TABLE statement is printed to standard output.

OPTIONS

--ask-pass

Prompt for password.

--defaults-file=DEFAULTS_FILE

Read from MySQL configuration file. Overrides --user, --password, --socket, --port.

Configuration needs to be in the following format:

[client]
user=my_user
password=my_pass
socket=/tmp/mysql.sock
port=3306

-H HOST, --host=HOST

MySQL host (default: localhost)

-p PASSWORD, --password=PASSWORD

MySQL password

-P PORT, --port=PORT

TCP/IP port (default: 3306)

--print-only

Do not execute. Only print statement

-S SOCKET, --socket=SOCKET

MySQL socket file. Only applies when host is localhost

-u USER, --user=USER

MySQL user

-v, --verbose

Print user friendly messages

ENVIRONMENT

Requires MySQL 5.0 or newer, python 2.3 or newer. python-mysqldb must be installed in order to use this tool. You can

apt-get install python-mysqldb

yum install mysql-python

LICENSE

This tool is released under the BSD license.

Copyright (c) 2008 - 2010, Shlomi Noach
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of the organization nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

AUTHOR

Shlomi Noach

openark kit documentation

openark kit documentation