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https://dev.mysql.com/doc/refman/5.7/en/create-table-generated-columns.html
Values of a generated column are computed from an expression included in the column definition. Generated columns are supported by the NDB storage engine beginning with MySQL NDB Cluster 7.5.3. Generated column definitions have this syntax: col_name ...
https://dev.mysql.com/doc/refman/5.7/en/data-masking-usage.html
Before using MySQL Enterprise Data Masking and De-Identification, install it according to the instructions provided at Section 6.5.2, “Installing or Uninstalling MySQL Enterprise Data Masking and De-Identification”. To use MySQL Enterprise Data ...
https://dev.mysql.com/doc/refman/5.7/en/handler-scope.html
A stored program may include handlers to be invoked when certain conditions occur within the program. The applicability of each handler depends on its location within the program definition and on the condition or conditions that it handles: A ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-temp-table-info-table.html
The INNODB_TEMP_TABLE_INFO table provides information about user-created InnoDB temporary tables that are active in an InnoDB instance. It does not provide information about internal InnoDB temporary tables used by the optimizer. The ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-deadlock-detection.html
When deadlock detection is enabled (the default), InnoDB automatically detects transaction deadlocks and rolls back a transaction or transactions to break the deadlock. InnoDB tries to pick small transactions to roll back, where the size of a ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-file-format-compatibility-checking-table-access.html
When a table is first accessed, InnoDB (including some releases prior to InnoDB 1.0) checks that the file format of the tablespace in which the table is stored is fully supported. This check prevents crashes or corruptions that would otherwise ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-locking-reads.html
If you query data and then insert or update related data within the same transaction, the regular SELECT statement does not give enough protection. Other transactions can update or delete the same rows you just queried. InnoDB supports two types of ...
https://dev.mysql.com/doc/refman/5.7/en/log-file-maintenance.html
As described in Section 5.4, “MySQL Server Logs”, MySQL Server can create several different log files to help you see what activity is taking place. However, you must clean up these files regularly to ensure that the logs do not take up too ...
https://dev.mysql.com/doc/refman/5.7/en/multiple-key-caches.html
Shared access to the key cache improves performance but does not eliminate contention among sessions entirely. They still compete for control structures that manage access to the key cache buffers. To reduce key cache access contention further, ...
https://dev.mysql.com/doc/refman/5.7/en/myisamchk-table-info.html
To obtain a description of a MyISAM table or statistics about it, use the commands shown here. The output from these commands is explained later in this section. myisamchk -d tbl_name Runs myisamchk in “describe mode” to produce a description ...