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https://dev.mysql.com/doc/refman/8.0/en/sys-ps-setup-show-disabled.html
Displays all currently disabled Performance Schema configuration. Parameters in_show_instruments BOOLEAN: Whether to display disabled instruments. This might be a long list. in_show_threads BOOLEAN: Whether to display disabled threads. Example ...
https://dev.mysql.com/doc/refman/8.0/en/sys-ps-trace-statement-digest.html
If you find a statement of interest within the Performance Schema events_statements_summary_by_digest table, specify its DIGEST column MD5 value to this procedure and indicate the polling duration and interval. in_start_fresh BOOLEAN: Whether to ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statement-analysis.html
full_scan The total number of full table scans performed by occurrences of the statement. tmp_tables The total number of internal in-memory temporary tables created by occurrences of the statement. tmp_disk_tables The total number of internal ...The ...
https://dev.mysql.com/doc/refman/8.0/en/uninstall-component.html
It requires the DELETE privilege for the mysql.component system table because it removes the row from that table that registers the component. A loader service handles component unloading, which includes removing uninstalled components from the ...A ...
https://dev.mysql.com/doc/refman/8.0/en/use.html
The named database remains the default until the end of the session or another USE statement is issued: USE db1; SELECT COUNT(*) FROM mytable; # selects from db1.mytable USE db2; SELECT COUNT(*) FROM mytable; # selects from db2.mytable The database ... USE db_name The USE statement tells MySQL to use the named database as the default (current) database for subsequent ...
https://dev.mysql.com/doc/refman/8.0/en/user-variables.html
(Exception: A user with access to the Performance Schema user_variables_by_thread table can see all user variables for all sessions.) All variables for a given client session are automatically freed when that client exits. (This is the same ... You ...
https://dev.mysql.com/doc/refman/8.0/en/what-is-mysql.html
A relational database stores data in separate tables rather than putting all the data in one big storeroom. The logical model, with objects such as databases, tables, views, rows, and columns, offers a flexible programming environment. You set up ...
https://dev.mysql.com/doc/refman/8.0/en/windows-symbolic-links.html
After this, all tables created in the database mydb are created in D:\data\mydb. Alternatively, on any version of Windows supported by MySQL, you can create a symbolic link to a MySQL database by creating a .sym file in the data directory that ...
https://dev.mysql.com/doc/refman/8.0/en/expired-password-handling.html
For example: ALTER USER 'myuser'@'localhost' PASSWORD EXPIRE; For each connection that uses an account with an expired password, the server either disconnects the client or restricts the client to “sandbox mode,” in which the server permits the ... MySQL provides password-expiration capability, which enables database administrators to require that users reset their ...
https://dev.mysql.com/doc/refman/8.0/en/set-password.html
Note Rather than using SET PASSWORD to assign passwords, ALTER USER is the preferred statement for account alterations, including assigning passwords. For example: ALTER USER user IDENTIFIED BY 'auth_string'; Note Clauses for random password ... SET ...