No cache version.


Caching disabled. Default setting for this page:enabled (code DEF204)
If the display is too slow, you can disable the user mode to view the cached version.

Rechercher dans le manuel MySQL

5.6.5.1 Installing or Uninstalling ddl_rewriter

Contents

This section describes how to install or uninstall the ddl_rewriter plugin. For general information about installing plugins, see Section 5.6.1, “Installing and Uninstalling Plugins”.

Note

If installed, the ddl_rewriter plugin involves some minimal overhead even when disabled. To avoid this overhead, install ddl_rewriter only for the period during which you intend to use it.

The primary use case is modification of statements restored from dump files, so the typical usage pattern is: 1) Install the plugin; 2) restore the dump file or files; 3) uninstall the plugin.

To be usable by the server, the plugin library file must be located in the MySQL plugin directory (the directory named by the plugin_dir system variable). If necessary, configure the plugin directory location by setting the value of plugin_dir at server startup.

The plugin library file base name is ddl_rewriter. The file name suffix differs per platform (for example, .so for Unix and Unix-like systems, .dll for Windows).

To install the ddl_rewriter plugin, use the INSTALL PLUGIN statement (adjust the .so suffix for your platform as necessary):

  1. INSTALL PLUGIN ddl_rewriter SONAME 'ddl_rewriter.so';

To verify plugin installation, examine the INFORMATION_SCHEMA.PLUGINS table or use the SHOW PLUGINS statement (see Section 5.6.2, “Obtaining Server Plugin Information”). For example:

  1. mysql> SELECT PLUGIN_NAME, PLUGIN_STATUS, PLUGIN_TYPE
  2.        FROM INFORMATION_SCHEMA.PLUGINS
  3.        WHERE PLUGIN_NAME LIKE 'ddl%';
  4. +--------------+---------------+-------------+
  5. | PLUGIN_NAME  | PLUGIN_STATUS | PLUGIN_TYPE |
  6. +--------------+---------------+-------------+
  7. | ddl_rewriter | ACTIVE        | AUDIT       |
  8. +--------------+---------------+-------------+

As the preceding result shows, ddl_rewriter is implemented as an audit plugin.

If the plugin failed to initialize, check the server error log for diagnostic messages.

Once installed as just described, ddl_rewriter remains installed until uninstalled. To remove it, use UNINSTALL PLUGIN:

  1. UNINSTALL PLUGIN ddl_rewriter;

If ddl_rewriter is installed, you can use the --ddl-rewriter option for subsequent server startups to control ddl_rewriter plugin activation. For example, to prevent the plugin from being enabled at runtime, use this option: 

[mysqld]
ddl-rewriter=OFF

Find a PHP function

Document created the 26/06/2006, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/mysql-rf-ddl-rewriter-installation.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:en Manuel MySQL : https://dev.mysql.com/

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut