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https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-top.html
For measured load, blue is used for execution time, yellow for send time, red for time spent in send buffer full waits, and blank spaces for idle time. The display updates once per second; to set a different delay interval, use --sleep-time (-s).
https://dev.mysql.com/doc/refman/8.4/en/sys-statement-analysis.html
max_latency The maximum single wait time of timed occurrences of the statement. err_count The total number of errors produced by occurrences of the statement. total_latency The total wait time of timed occurrences of the statement. avg_latency The ...The statement_analysis and x$statement_analysis views have these columns: query The normalized statement ...
https://dev.mysql.com/doc/internals/en/binary-protocol-value.html
ProtocolBinary::MYSQL_TYPE_STRING, ProtocolBinary::MYSQL_TYPE_VARCHAR, ProtocolBinary::MYSQL_TYPE_VAR_STRING, ProtocolBinary::MYSQL_TYPE_ENUM, ProtocolBinary::MYSQL_TYPE_SET, ProtocolBinary::MYSQL_TYPE_LONG_BLOB, ...
https://dev.mysql.com/doc/internals/en/tracing-example.html
The statement's execution is naturally made of "steps": "steps": [ { "join_preparation": { This is a join's preparation "select#": 1, for the first SELECT of the statement (which has only one, here). All traces have the same basic structure, but if ..."rest_of_plan": [ { "database": "test", "table": "alias2", "best_access_path": { "considered_access_paths": [ { "access_type": "ref", "index": "PRIMARY", "records": 1, "cost": 20.2, "chosen": true We choose ref access on the primary key of ...
https://dev.mysql.com/doc/refman/8.4/en/alter-user.html
When ALTER USER adds, modifies, or drops second and third factors in a single statement, operations are executed sequentially, but if any operation in the sequence fails the entire ALTER USER statement fails. Statements that modify secondary ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-options4.html
For calls that cause this limit to be exceeded, a CR_INVALID_PARAMETER_NO error occurs. int mysql_options4(MYSQL *mysql, enum mysql_option option, const void *arg1, const void *arg2) Description mysql_options4() is similar to mysql_options() but ...
https://dev.mysql.com/doc/workbench/en/wbcopytables.html
The copy executes a SELECT statement on the source database and then INSERT to insert the retrieved rows into the target MySQL server. You can use ODBC specific data source options from the source RDBMS to specify the number of rows to fetch at a ...
https://dev.mysql.com/doc/workbench/en/wb-sql-editor-navigator.html
This executes a USE schema_name statement so that subsequent statements without schema qualifiers are executed against this schema. The Navigator area of the sidebar contains options to manage the active MySQL connection. It also lists the schemas ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-mgmd.html
--connect-retries Command-Line Format --connect-retries=# Type Integer Default Value 12 Minimum Value 0 Maximum Value 12 Number of times to retry connection before giving up. --connect-retry-delay Command-Line Format --connect-retry-delay=# Type ...
https://dev.mysql.com/doc/x-devapi-userguide/en/working-with-document-ids.html
The document ID is a VARBINARY() with a maximum length of 32 characters. // using a book's unique ISBN as the object ID myColl.add( { _id: "978-1449374020", title: "MySQL Cookbook: Solutions for Database Developers and Administrators" }).execute(); ... This section describes what a document ID is and how to work with ...