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https://dev.mysql.com/doc/refman/8.4/en/performance-schema-status-monitoring.html
Performance_schema_xxx_instances_lost indicates how many instances of object type xxx could not be created. If the server cannot create a given instrumented mutex instance, it increments Performance_schema_mutex_instances_lost. INSTALL PLUGIN ...
https://dev.mysql.com/doc/connectors/en/connector-j-installing-source.html
The following third-party libraries: JUnit 5.11.3 (see installation and download information in the JUnit 5 User Guide). The latest release of the Connector/J 8.0 series is on the release/8.0 branch; use the following command to check it out: $> git ... Caution You need to install Connector/J from source only if you want to build a customized version of Connector/J or if you are interested in helping us test our new ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-advisor-auto-indexing-examples.html
To evaluate all user defined schemas: mysql> CALL sys.autopilot_index_advisor(NULL); To evaluate selected schemas: mysql> CALL sys.autopilot_index_advisor(JSON_OBJECT('target_schema',JSON_ARRAY('schema1','schema2', ...))); An example of the output ...| | NOTE: Indexes are be stored efficiently at time of ...The reason, expected ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-preparing-a-recommendation-model.html
mysql> CREATE TABLE training_dataset ( user_id VARCHAR(3), item_id VARCHAR(3), rating DECIMAL(3, 1), PRIMARY KEY (user_id, item_id) ); Insert the sample data to train into the table. mysql> CREATE TABLE testing_dataset ( user_id VARCHAR(3), item_id ...To ensure reliable predictions, you should create an additional validation ... This topic describes how to prepare the ...
https://dev.mysql.com/doc/connector-j/en/connector-j-installing-source.html
The following third-party libraries: JUnit 5.12.2 (see installation and download information in the JUnit 5 User Guide). The latest release of the Connector/J 9.5 series is on the release/9.5 branch; use the following command to check it out: $> git ... Caution You need to install Connector/J from source only if you want to build a customized version of Connector/J or if you are interested in helping us test our new ...
https://dev.mysql.com/doc/refman/8.4/en/bug-reports.html
To discuss problems with other users, you can use the MySQL Community Slack. If a database table is related to the problem, include the output from the SHOW CREATE TABLE db_name.tbl_name statement in the bug report. The information helps us create a ... Before posting a bug report about a problem, please try to verify that it is a bug and that it has not been reported already: Start by searching the MySQL online manual at ...
https://dev.mysql.com/doc/refman/8.4/en/enterprise-encryption-usage.html
They are good for encrypting small amounts of data and creating and verifying signatures. The digest type in these functions refers to the algorithm that is used to sign the data, not the algorithm that was used to create the original input for the ... To use MySQL Enterprise Encryption in applications, invoke the functions that are appropriate for the operations you wish to ...
https://dev.mysql.com/doc/refman/8.4/en/enum.html
For example, this CREATE TABLE statement does not work because the CONCAT function cannot be used to construct an enumeration value: CREATE TABLE sizes ( size ENUM('small', CONCAT('med','ium'), 'large') ); You also cannot employ a user variable as ... An ENUM is a string object with a value chosen from a list of permitted values that are enumerated explicitly in the column specification at table creation ...
https://dev.mysql.com/doc/mysql-ai/9.5/en/mys-ai-aml-preparing-a-recommendation-model.html
mysql> CREATE TABLE training_dataset ( user_id VARCHAR(3), item_id VARCHAR(3), rating DECIMAL(3, 1), PRIMARY KEY (user_id, item_id) ); Insert the sample data to train into the table. mysql> CREATE TABLE testing_dataset ( user_id VARCHAR(3), item_id ...To ensure reliable predictions, you should create an additional validation ... This topic describes how to prepare the ...
https://dev.mysql.com/doc/workbench/en/wb-mysql-enterprise-backup-online-backup.html
It is scheduled using the operating system user that is scheduling the backup, which is typically the MySQL user. A new sub-folder is created for each backup, named with its timestamp. Each incremental backup also creates its own timestamped ...