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https://dev.mysql.com/doc/x-devapi-userguide-shell-python/en/error-handling.html
For all other languages either proper exception handling is required to catch errors or the traditional error handling pattern needs to be used if the language does not support exceptions. The default error handling can be changed by creating a ...
https://dev.mysql.com/doc/refman/8.4/en/error-log-json.html
This section describes how to configure error logging using the built-in filter, log_filter_internal, and the JSON sink, log_sink_json, to take effect immediately and for subsequent server startups. For general information about configuring error ...
https://dev.mysql.com/doc/refman/8.4/en/communication-errors.html
If connection problems occur such as communication errors or aborted connections, use these sources of information to diagnose problems: The error log. If the log_error_verbosity system variable is set to 3, you might find messages like this in ...
https://dev.mysql.com/doc/connectors/en/connector-python-api-errors-databaseerror.html
This exception is the default for any MySQL error which does not fit the other exceptions.
https://dev.mysql.com/doc/connectors/en/connector-python-api-errors-integrityerror.html
The following example shows a duplicate key error raised as IntegrityError: cursor.execute("CREATE TABLE t1 (id int, PRIMARY KEY (id))") try: cursor.execute("INSERT INTO t1 (id) VALUES (1)") cursor.execute("INSERT INTO t1 (id) VALUES (1)") except ...
https://dev.mysql.com/doc/connectors/en/connector-python-api-errors-interfaceerror.html
This exception is raised for errors originating from Connector/Python itself, not related to the MySQL server.
https://dev.mysql.com/doc/connectors/en/connector-python-api-errors-operationalerror.html
This exception is raised for errors which are related to MySQL's operations. For example: too many connections; a host name could not be resolved; bad handshake; server is shutting down, communication errors.
https://dev.mysql.com/doc/connectors/en/connector-python-api-errors-poolerror.html
This exception is raised for connection pool errors. errors.PoolError is a subclass of errors.Error. ...
https://dev.mysql.com/doc/connector-python/en/connector-python-api-errors-databaseerror.html
This exception is the default for any MySQL error which does not fit the other exceptions.
https://dev.mysql.com/doc/connector-python/en/connector-python-api-errors-integrityerror.html
The following example shows a duplicate key error raised as IntegrityError: cursor.execute("CREATE TABLE t1 (id int, PRIMARY KEY (id))") try: cursor.execute("INSERT INTO t1 (id) VALUES (1)") cursor.execute("INSERT INTO t1 (id) VALUES (1)") except ...