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https://dev.mysql.com/doc/connector-j/en/connector-j-YEAR.html
How a value in a MySQL YEAR column is handled is controlled by the connection property yearIsDateType: If yearIsDateType is true (the default), YEAR is mapped to the Java data type java.sql.Date. If yearIsDateType is false, YEAR is mapped to the ...
https://dev.mysql.com/doc/refman/8.4/en/added-deprecated-removed.html
Options and Variables Introduced in MySQL 8.4 Options and Variables Deprecated in MySQL 8.4 Options and Variables Removed in MySQL 8.4 This section lists server variables, status variables, and options that were added for the first time, have been ...
https://dev.mysql.com/doc/refman/8.4/en/administrative-connection-interface.html
As mentioned in Connection Volume Management, to allow for the need to perform administrative operations even when max_connections connections are already established on the interfaces used for ordinary connections, the MySQL server permits a ...
https://dev.mysql.com/doc/refman/8.4/en/aggregate-functions-and-modifiers.html
They are often used with a GROUP BY clause to group values into subsets. For information about aggregate functions that operate on geometry values, see Section 14.16.12, “Spatial Aggregate Functions”.
https://dev.mysql.com/doc/refman/8.4/en/alter-procedure.html
ALTER PROCEDURE proc_name [characteristic ...] characteristic: { COMMENT 'string' | LANGUAGE SQL | { CONTAINS SQL | NO SQL | READS SQL DATA | MODIFIES SQL DATA } | SQL SECURITY { DEFINER | INVOKER } } This statement can be used to change the ...
https://dev.mysql.com/doc/refman/8.4/en/alter-server.html
ALTER SERVER server_name OPTIONS (option [, option] ...) Alters the server information for server_name, adjusting any of the options permitted in the CREATE SERVER statement. For example, to update the USER option: ALTER SERVER s OPTIONS (USER ...
https://dev.mysql.com/doc/refman/8.4/en/alter-table-generated-columns.html
ALTER TABLE operations permitted for generated columns are ADD, MODIFY, and CHANGE. CREATE TABLE t1 (c1 INT); ALTER TABLE t1 ADD COLUMN c2 INT GENERATED ALWAYS AS (c1 + 1) STORED; The data type and expression of generated columns can be modified.
https://dev.mysql.com/doc/refman/8.4/en/alter-view.html
ALTER [ALGORITHM = {UNDEFINED | MERGE | TEMPTABLE}] [DEFINER = user] [SQL SECURITY { DEFINER | INVOKER }] VIEW view_name [(column_list)] AS select_statement [WITH [CASCADED | LOCAL] CHECK OPTION] This statement changes the definition of a view, ...
https://dev.mysql.com/doc/refman/8.4/en/ansi-diff-comments.html
Standard SQL uses the C syntax /* this is a comment */ for comments, and MySQL Server supports this syntax as well. MySQL also support extensions to this syntax that enable MySQL-specific SQL to be embedded in the comment; see Section 11.7, ...
https://dev.mysql.com/doc/refman/8.4/en/ansi-diff-foreign-keys.html
For example, if you define a RESTRICT type constraint, and there is a child row with several parent rows, InnoDB does not permit the deletion of any of the parent rows. This means that you cannot use self-referential ON UPDATE CASCADE or ON UPDATE ...