MySQL 8.4 Release Notes
7.6.4.1 安装或卸载重写器查询重写插件
Note
If installed, the Rewriter plugin involves some overhead even when disabled. To avoid this overhead, do not install the plugin unless you plan to use it.
To install or uninstall the Rewriter query rewrite plugin, choose the appropriate script located in the share directory of your MySQL installation:
-
install_rewriter.sql: Choose this script to install theRewriterplugin and its associated elements. -
uninstall_rewriter.sql: Choose this script to uninstall theRewriterplugin and its associated elements.
Run the chosen script as follows:
$> mysql -u root -p < install_rewriter.sql
Enter password: (enter root password here)The example here uses the install_rewriter.sql installation script. Substitute uninstall_rewriter.sql if you are uninstalling the plugin.
Running an installation script should install and enable the plugin. To verify that, connect to the server and execute this statement:
mysql> SHOW GLOBAL VARIABLES LIKE 'rewriter_enabled';
+------------------+-------+
| Variable_name | Value |
+------------------+-------+
| rewriter_enabled | ON |
+------------------+-------+For usage instructions, see Section 7.6.4.2, “Using the Rewriter Query Rewrite Plugin”. For reference information, see Section 7.6.4.3, “Rewriter Query Rewrite Plugin Reference”.