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https://dev.mysql.com/doc/refman/8.4/en/timestamp-initialization.html
If a TIMESTAMP or DATETIME column definition includes an explicit fractional seconds precision value anywhere, the same value must be used throughout the column definition. TIMESTAMP and DATETIME columns can be automatically initialized and updated ...An auto-updated column remains unchanged if all other columns are set to their current ...
https://dev.mysql.com/doc/workbench/en/wb-accessibility.html
MySQL Workbench includes options to improve user accessibility that you can select from the Workbench Preferences dialog. To open the dialog, click Edit and then Preferences from the menu. Fonts Modeling fonts are adjustable from the Appearance ...
https://dev.mysql.com/doc/workbench/en/wb-eer-diagram-editor.html
Enhanced Entity-Relationship (EER) diagrams are created by double-clicking Add Diagram in the Model Editor. You may create any number of EER diagrams just as you may create any number of physical schemas (databases). Clicking an EER diagram tab ...
https://dev.mysql.com/doc/workbench/en/wb-table-editor-partitioning-tab.html
To enable partitioning for your table, check the Enable Partitioning check box. This enables the partitioning options (shown in the figure that follows). Figure 8.18 The Partitioning Tab The Partition By pop-up menu displays the types of partitions ...
https://dev.mysql.com/doc/connectors/en/connector-odbc-configuration-dsn.html
A Data Source Name associates the configuration parameters for communicating with a specific database. Generally, a DSN consists of the following parameters: Name Host Name Database Name Login Password In addition, different ODBC drivers, including ...
https://dev.mysql.com/doc/connector-odbc/en/connector-odbc-configuration-dsn.html
A Data Source Name associates the configuration parameters for communicating with a specific database. Generally, a DSN consists of the following parameters: Name Host Name Database Name Login Password In addition, different ODBC drivers, including ...
https://dev.mysql.com/doc/internals/en/compression.html
Compression is its own protocol, is transparent to the rest of the MySQL protocol and compresses a stream of bytes (which may even be a part of several Protocol::Packet). It is enabled if the server announces CLIENT_COMPRESS in its ...
https://dev.mysql.com/doc/internals/en/describing-packets.html
If a field has a fixed value, its description shows it as a hex value in brackets like this: [00] .
https://dev.mysql.com/doc/internals/en/implementing-position-method.html
The [custom-engine.html#custom-engine-api-reference-position position()] method is called after every call to rnd_next() if the data needs to be reordered: void ha_foo::position(const byte *record) It stores a "position" of a record in this->ref.
https://dev.mysql.com/doc/internals/en/implementing-rollback.html
Of the two major transactional operations, ROLLBACK is the more complicated to implement. All operations that occurred during the transaction must be reversed so that all rows are unchanged from before the transaction began. To support ROLLBACK, ...