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https://dev.mysql.com/doc/refman/8.0/en/show-profile.html
Note The SHOW PROFILE and SHOW PROFILES statements are deprecated; expect them to be removed in a future MySQL release. Use the Performance Schema instead; see Section 29.19.1, “Query Profiling Using Performance Schema”. To control profiling, ...
https://dev.mysql.com/doc/refman/8.0/en/spatial-type-overview.html
For other examples showing how to use spatial data types in MySQL, see Section 13.4.6, “Creating Spatial Columns”. MySQL has spatial data types that correspond to OpenGIS classes. The basis for these types is described in Section 13.4.2, “The ...
https://dev.mysql.com/doc/refman/8.0/en/stored-routines-privileges.html
The MySQL grant system takes stored routines into account as follows: The CREATE ROUTINE privilege is needed to create stored routines. This privilege is granted automatically to the creator of a routine if necessary, and dropped from the creator ...The ALTER ROUTINE privilege is needed to alter or drop stored ...
https://dev.mysql.com/doc/refman/8.0/en/upgrading-what-is-upgraded.html
If the actual data dictionary version is lower than the current expected version, the server creates data dictionary tables with updated definitions, copies persisted metadata to the new tables, atomically replaces the old tables with the new ones, ... Installing a new version of MySQL may require upgrading these parts of the existing installation: The mysql system schema, which contains tables that store information required by the MySQL server as it runs (see Section 7.3, “The mysql System ...
https://dev.mysql.com/doc/refman/8.0/en/using-systemd.html
This script assists in creating the error log file only if the log location matches a pattern (/var/log/mysql*.log for RPM platforms, /var/log/mysql/*.log for Debian platforms). To use a localized systemd configuration file, create the ...If you ...
https://dev.mysql.com/doc/refman/8.0/en/view-syntax.html
The CREATE VIEW statement creates a new view (see Section 15.1.23, “CREATE VIEW Statement”). A view can be created from many kinds of SELECT statements. To alter the definition of a view or drop a view, use ALTER VIEW (see Section 15.1.11, ...
https://dev.mysql.com/doc/refman/8.0/en/windows-installation.html
MySQL Installer automatically installs MySQL Server and additional MySQL products, creates an options file, starts the server, and enables you to create default user accounts. Do not forget to use MAX_ROWS and AVG_ROW_LENGTH when you create tables.
https://dev.mysql.com/doc/refman/8.0/en/account-locking.html
MySQL supports locking and unlocking user accounts using the ACCOUNT LOCK and ACCOUNT UNLOCK clauses for the CREATE USER and ALTER USER statements: When used with CREATE USER, these clauses specify the initial locking state for a new account. In ...
https://dev.mysql.com/doc/refman/8.0/en/alter-logfile-group.html
You can verify that the UNDO files were created and obtain information about them by querying the Information Schema FILES table. ALTER LOGFILE GROUP logfile_group ADD UNDOFILE 'file_name' [INITIAL_SIZE [=] size] [WAIT] ENGINE [=] engine_name This ...
https://dev.mysql.com/doc/refman/8.0/en/analyze-table.html
The sampling-rate value in the HISTOGRAM column of the Information Schema COLUMN_STATISTICS table can be queried to determine the fraction of data that was sampled to create the histogram. row *************************** Table: employees.employees ...ANALYZE [NO_WRITE_TO_BINLOG | LOCAL] TABLE tbl_name UPDATE HISTOGRAM ON col_name [, col_name] ...