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https://dev.mysql.com/doc/refman/8.0/en/replication-features-reserved-words.html
For example, a table column named rank on a MySQL 5.7 source that is replicating to a MySQL 8.0 replica could cause a problem because RANK is a reserved word beginning in MySQL 8.0. Replication can fail in such cases with Error 1064 You have an ...
https://dev.mysql.com/doc/refman/8.0/en/replication-howto-additionalslaves.html
For example, the InnoDB system tablespace, undo tablespace, and redo log might be stored in an alternative location. Alternatively, you can use the ALTER EVENT statement to set individual events to DISABLE or DISABLE ON SLAVE to prevent them from ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-invoked.html
You can do this by storing in a separate table the event names from the SELECT statement shown previously, or using ALTER EVENT statements to rename the events with a common prefix such as replicated_ to identify them. The following statements are ... Replication of invoked features such as loadable functions and stored programs (stored procedures and functions, triggers, and events) provides the following characteristics: The effects of the feature are always ...
https://dev.mysql.com/doc/refman/8.0/en/charset-database.html
The CREATE DATABASE and ALTER DATABASE statements have optional clauses for specifying the database character set and collation: CREATE DATABASE db_name [[DEFAULT] CHARACTER SET charset_name] [[DEFAULT] COLLATE collation_name] ALTER DATABASE db_name ... Every database has a database character set and a database ...
https://dev.mysql.com/doc/refman/8.0/en/password-logging.html
In particular, INSERT or UPDATE statements for the mysql.user system table that refer to literal passwords are logged as is, so you should avoid such statements. (Direct modification of grant tables is discouraged, anyway.) For the general query ...
https://dev.mysql.com/doc/refman/8.0/en/char.html
The length of a CHAR column is fixed to the length that you declare when you create the table. See Section 10.4.7, “Limits on Table Column Count and Row Size”. The following table illustrates the differences between CHAR and VARCHAR by showing ... The CHAR and VARCHAR types are similar, but differ in the way they are stored and ...
https://dev.mysql.com/doc/refman/8.0/en/charset-collation-effect.html
latin1_swedish_ci latin1_german1_ci latin1_german2_ci Muffler Muffler Müller MX Systems Müller Muffler Müller MX Systems MX Systems MySQL MySQL MySQL The character that causes the different sort orders in this example is ü (German ...
https://dev.mysql.com/doc/refman/8.0/en/cursor-restrictions.html
In MySQL, a server-side cursor is materialized into an internal temporary table. Initially, this is a MEMORY table, but is converted to a MyISAM table when its size exceeds the minimum value of the max_heap_table_size and tmp_table_size system ...
https://dev.mysql.com/doc/refman/8.0/en/data-masking-components-installation.html
MySQL Enterprise Data Masking and De-Identification database table and components are: masking_dictionaries table Purpose: A table in the mysql system schema that provides persistent storage of dictionaries and terms. URN: ... As of MySQL 8.0.33, ...
https://dev.mysql.com/doc/refman/8.0/en/get-diagnostics.html
For example: mysql> GET DIAGNOSTICS CONDITION 1 @p5 = SCHEMA_NAME, @p6 = TABLE_NAME; mysql> SELECT @p5, @p6; +------+------+ | @p5 | @p6 | +------+------+ | | | +------+------+ In standard SQL, if there are multiple conditions, the first condition ... GET [CURRENT | STACKED] DIAGNOSTICS { statement_information_item [, statement_information_item] ...