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https://dev.mysql.com/doc/refman/8.0/en/window-functions-usage.html
For example, if a table contains a TIMESTAMP column named ts, standard SQL permits PARTITION BY ts but not PARTITION BY HOUR(ts), whereas MySQL permits both. MySQL also supports nonaggregate functions that are used only as window functions. A MySQL ...However, whereas an aggregate operation groups query rows into a single result row, a window function produces a result for each query row: The row for which function evaluation occurs is called the current ...
https://dev.mysql.com/doc/refman/8.0/en/adding-collation.html
Warning User-defined collations are deprecated; you should expect support for them to be removed in a future version of MySQL. As of MySQL 8.0.33, the server issues a warning for any use of COLLATE user_defined_collation in an SQL statement; a ...A ...
https://dev.mysql.com/doc/refman/8.0/en/call.html
When the procedure returns, a client program can also obtain the number of rows affected for the final statement executed within the routine: At the SQL level, call the ROW_COUNT() function; from the C API, call the mysql_affected_rows() function.
https://dev.mysql.com/doc/refman/8.0/en/charset-binary-set.html
Note Within the mysql client, binary strings display using hexadecimal notation, depending on the value of the --binary-as-hex. For more information about that option, see Section 6.5.1, “mysql — The MySQL Command-Line Client”. The binary ...
https://dev.mysql.com/doc/refman/8.0/en/charset-collation-information-schema.html
For example, comparisons with SCHEMATA.SCHEMA_NAME match 'information_schema' or 'INFORMATION_SCHEMA' regardless of platform: mysql> SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = 'information_schema'; +--------------------+ ... String columns in INFORMATION_SCHEMA tables have a collation of utf8mb3_general_ci, which is ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-local.html
mysql> GRANT BACKUP_ADMIN ON *.* TO 'clone_user'; where clone_user is the MySQL user that performs the cloning operation. The user you select to perform the cloning operation can be any MySQL user with the BACKUP_ADMIN privilege on *.*. The ...The ...
https://dev.mysql.com/doc/refman/8.0/en/error-log-syslog.html
It is possible to have mysqld write the error log to the system log (the Event Log on Windows, and syslog on Unix and Unix-like systems). Note For MySQL 8.0 configuration, you must enable error logging to the system log explicitly. This differs ...
https://dev.mysql.com/doc/refman/8.0/en/except.html
query_expression_body EXCEPT [ALL | DISTINCT] query_expression_body [EXCEPT [ALL | DISTINCT] query_expression_body] [...] query_expression_body: See Section 15.2.14, “Set Operations with UNION, INTERSECT, and EXCEPT” EXCEPT limits the result ...
https://dev.mysql.com/doc/refman/8.0/en/function-loading.html
MySQL supports automatic function loading during server startup and manual loading thereafter. It registers the function in the mysql.func system table to make it persistent across server restarts. For this reason, CREATE FUNCTION requires the ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-compatibility-communication.html
A replication group uses a Group Replication communication protocol version that can differ from the MySQL Server version of the members. To check the group's communication protocol version, issue the following statement on any member: SELECT ...