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https://dev.mysql.com/doc/refman/8.0/en/innodb-temporary-tablespace.html
Because the pool of session temporary tablespaces is recreated each time the server is started, space IDs for session temporary tablespaces are not persisted when the server is shut down, and may be reused. The global temporary tablespace is removed ... InnoDB uses session temporary tablespaces and a global temporary ...Beginning with MySQL 8.0.16, ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-data-locks-table.html
Lock ID formats are internal and subject to change at any time. Use the data_locks table to help diagnose performance problems that occur during times of heavy concurrent load. For InnoDB, see the discussion of this topic at Section 17.15.2, ...For ...
https://dev.mysql.com/doc/refman/8.0/en/replication-privilege-checks-recover.html
You can use mysqlbinlog to retrieve and display the events that were logged around the time of the error. If a privilege check against the PRIVILEGE_CHECKS_USER account fails, the transaction is not executed and replication stops for the channel.
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. All statements are profiled except SHOW PROFILE and SHOW PROFILES, so neither of those statements appears in the profile list.
https://dev.mysql.com/doc/refman/8.0/en/stored-routines-syntax.html
In MySQL 8.0.22 and later, a user variable referenced by a statement in a stored procedure has its type determined the first time the procedure is invoked, and retains this type each time the procedure is invoked thereafter. Stored routines are ...
https://dev.mysql.com/doc/refman/8.0/en/user-variables.html
Beginning with MySQL 8.0.22, a reference to a user variable in a prepared statement has its type determined when the statement is first prepared, and retains this type each time the statement is executed thereafter. Similarly, the type of a user ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndb-innodb-engines.html
For those unaccustomed to working with NDB, unexpected behaviors can arise due to its distributed nature with regard to transactions, foreign keys, table limits, and other characteristics. The NDB storage engine is implemented using a distributed, ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-group-membership.html
The group is dynamic and servers can leave (either voluntarily or involuntarily) and join it at any time. In this situation, Group Replication's failure detection mechanism recognizes after a short period of time that the member has left, and a ...
https://dev.mysql.com/doc/refman/8.0/en/show-table-status.html
For example, InnoDB stores multiple tables in its system tablespace and the data file timestamp does not apply. Even with file-per-table mode with each InnoDB table in a separate .ibd file, change buffering can delay the write to the data file, so ...You can also get this list using the mysqlshow --status db_name ... SHOW TABLE STATUS [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW TABLE STATUS works likes SHOW ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-columns.html
Columns using other data types relating to dates or times are not supported as partitioning columns. The next two sections discuss COLUMNS partitioning, which are variants on RANGE and LIST partitioning. All of these columns are taken into account ...COLUMNS partitioning enables the use of multiple columns in partitioning ...