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https://dev.mysql.com/doc/refman/9.7/en/telemetry-metrics-meter-metrics.html
errors_accept Connection_errors_accept ASYNC COUNTER The number of errors that occurred during calls to accept() on the listening port. errors_internal Connection_errors_internal ASYNC COUNTER The number of connections refused due to internal errors ... The following server metrics are registered by default: mysql.stats Metrics mysql.stats.com Metrics mysql.stats.connection Metrics mysql.perf_schema Metrics mysql.stats.handler Metrics mysql.stats.myisam Metrics mysql.stats.ssl Metrics mysql.inno Metrics mysql.inno.buffer_pool Metrics mysql.inno.data Metrics mysql.x Metrics mysql.x.stmt Metrics mysql.mle Metrics The maximum number of metric instruments which can be created is set by ...
https://dev.mysql.com/doc/connectors/en/connector-python-example-ddl.html
If there is an error, we examine the error number to check if the database does not exist. On any other error, the application exits and displays the error message. In a real application, we would typically avoid the error condition entirely by ...
https://dev.mysql.com/doc/connector-python/en/connector-python-example-ddl.html
If there is an error, we examine the error number to check if the database does not exist. On any other error, the application exits and displays the error message. In a real application, we would typically avoid the error condition entirely by ...
https://dev.mysql.com/doc/internals/en/x-protocol-expect-expectations.html
Assume the PrepareFind fails: don't execute the Execute don't try to close the stmt Mysqlx.Expect::Open([+no_error]) Mysqlx.Crud::PrepareFind(stmt_id=1, ...) // may fail Mysqlx.PreparedStmt::Execute(stmt_id=1, ...) // expectation(no_error) failed ...
https://dev.mysql.com/doc/internals/en/x-protocol-use-cases-use-cases.html
Streaming Inserts When inserting a large set of data (data import), make a trade-off among: memory usage on client and server side network round-trips error reporting For this example it is assumed that 1 million rows, each 1024 bytes in size have ... Topics in this section: Prepared Statements with Single Round-Trip Streaming Inserts SQL with Multiple Resultsets Inserting CRUD Data in a Batch Cross-Collection Update and Delete Prepared Statements with Single Round-Trip In the MySQL Client/Server Protocol, a PREPARE/EXECUTE cycle required two round-trips as the COM_STMT_EXECUTE requires data from the COM_STMT_PREPARE-ok ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-recattr-vs-ndbrecord.html
*/ if (psop->deleteCurrentTuple()) APIERROR(myTransaction->getNdbError()); processed++; } } if (result < 0) APIERROR(myTransaction->getNdbError()); if (processed !=0) { /* To get here, there are no more cached scan results, * and some row deletes ...
https://dev.mysql.com/doc/x-devapi-userguide/en/processing-warnings.html
Similar to the execution of single statements committing or rolling back a transaction can also trigger warnings. To be able to process these warnings the replied result object of Session.commit(); or Session.rollback(); needs to be checked. The ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-debugging-queries.html
In this mode, a SELECT statement returns an error if it cannot be offloaded. row *************************** id: 1 select_type: SIMPLE table: flightschedule partitions: NULL type: ALL possible_keys: NULL key: NULL key_len: NULL ref: NULL rows: 9828 ... This topic describes how to debug queries that fail to offload to MySQL HeatWave for ...
https://dev.mysql.com/doc/heatwave-aws/en/heatwave-aws-creating-lakehouse-data-mapping.html
The following shows what happens if parsing errors, formatting errors, or empty columns are found in a file during data loading, for each possible value of Strict mode: Default: The situation is handled according to the MySQL server's SQL mode ...
https://dev.mysql.com/doc/mysql-cluster-manager/8.4/en/mcm-client-commands.html
These are not recognized by the client, and are rejected with an error. To decrease the possibility of errors in reading and entering MySQL Cluster Manager commands, we recommend avoiding the use of space characters whenever possible. These commands ...