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https://dev.mysql.com/doc/refman/8.0/en/create-trigger.html
Trigger names exist in the schema namespace, meaning that all triggers must have unique names within a schema. CREATE [DEFINER = user] TRIGGER [IF NOT EXISTS] trigger_name trigger_time trigger_event ON tbl_name FOR EACH ROW [trigger_order] ...
https://dev.mysql.com/doc/refman/8.0/en/create-view.html
A view must have unique column names with no duplicates, just like a base table. If the view does not exist, CREATE OR REPLACE VIEW is the same as CREATE VIEW. If the view does exist, CREATE OR REPLACE VIEW replaces it. For information about ...
https://dev.mysql.com/doc/refman/8.0/en/data-masking-components-installation.html
CREATE TABLE IF NOT EXISTS mysql.masking_dictionaries( Dictionary VARCHAR(256) NOT NULL, Term VARCHAR(256) NOT NULL, UNIQUE INDEX dictionary_term_idx (Dictionary, Term), INDEX dictionary_idx (Dictionary) ) ENGINE = InnoDB DEFAULT CHARSET=utf8mb4; ...
https://dev.mysql.com/doc/refman/8.0/en/data-type-defaults.html
In the definition of an integer column, it is an alias for NOT NULL AUTO_INCREMENT UNIQUE. Data type specifications can have explicit or implicit default values. A DEFAULT value clause in a data type specification explicitly indicates a default ...
https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html
Note You cannot use format "%X%V" to convert a year-week string to a date because the combination of a year and week does not uniquely identify a year and month if the week crosses a month boundary. This section describes the functions that can be ...
https://dev.mysql.com/doc/refman/8.0/en/debugging-server.html
You should also read the OS-specific section in this manual for problems that may be unique to your environment. If you are using some functionality that is very new in MySQL, you can try to run mysqld with the --skip-new option (which disables all ...
https://dev.mysql.com/doc/refman/8.0/en/declare-cursor.html
A stored program may contain multiple cursor declarations, but each cursor declared in a given block must have a unique name. DECLARE cursor_name CURSOR FOR select_statement This statement declares a cursor and associates it with a SELECT statement ...
https://dev.mysql.com/doc/refman/8.0/en/derived-tables.html
For information about lateral derived tables preceded by the LATERAL keyword, see Section 15.2.15.9, “Lateral Derived Tables”. A derived table is an expression that generates a table within the scope of a query FROM clause. For example, a ...
https://dev.mysql.com/doc/refman/8.0/en/distinct-optimization.html
When combining LIMIT row_count with DISTINCT, MySQL stops as soon as it finds row_count unique rows. DISTINCT combined with ORDER BY needs a temporary table in many cases. Because DISTINCT may use GROUP BY, learn how MySQL works with columns in ...
https://dev.mysql.com/doc/refman/8.0/en/error-log-format.html
The ts (timestamp) key was added in MySQL 8.0.20 and is unique to the JSON-format log sink. Each error log sink (writer) component has a characteristic output format it uses to write messages to its destination, but other factors may influence the ...