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https://dev.mysql.com/doc/c-api/8.4/en/mysql-stmt-prepare.html
CR_SERVER_LOST The connection to the server was lost during the query CR_UNKNOWN_ERROR An unknown error occurred. If the prepare operation was unsuccessful (that is, mysql_stmt_prepare() returns nonzero), the error message can be obtained by calling ... int mysql_stmt_prepare(MYSQL_STMT *stmt, const char *stmt_str, unsigned long length) Description Given the statement handler returned by mysql_stmt_init(), prepares the SQL statement pointed to by the string stmt_str and returns a status ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-stmt-reset.html
It resets the statement on the server, data sent using mysql_stmt_send_long_data(), unbuffered result sets and current errors. CR_SERVER_LOST The connection to the server was lost during the query CR_UNKNOWN_ERROR An unknown error occurred. bool ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-use-result.html
The C API gives the error Commands out of sync; you can't run this command now if you forget to do this! You may not use mysql_data_seek(), mysql_row_seek(), mysql_row_tell(), mysql_num_rows(), or mysql_affected_rows() with a result returned from ...
https://dev.mysql.com/doc/relnotes/mysql-cluster-manager/8.4/en/news-8-4-3.html
(Bug #37021997) Client: When a mysqld node quit unexpectedly, the error message given was uninformative. The mcm client now displays error information extracted from the mysqld log in the situation. (Bug #36924101) Client: The error text for the ...
https://dev.mysql.com/doc/relnotes/connector-j/en/news-8-0-16.html
Also made the error message clearer when applications try to pass instances of unsupported classes. (Bug #29257922) X DevAPI: Connector/J threw an error when a JSON document contained only a field with an empty array as its value. With this fix, an ... Version 8.0.16 is the latest General Availability release of the 8.0 series of MySQL ...
https://dev.mysql.com/doc/relnotes/connector-j/en/news-8-0-22.html
(WL #13780) When trying to open multiple connections to a MySQL server using Connector/J with a named pipe on Windows systems, the attempt sometimes failed with the "All pipe instances are busy" error. With this fix, Connector/J throws the proper ...
https://dev.mysql.com/doc/relnotes/connector-j/en/news-8-0-29.html
(WL #14834) Bugs Fixed X DevAPI: If the connection property xdevapi.ssl-mode was set to DISABLED (or xdevapi.ssl-mode was not set, but the value was picked up from the sslMode setting), specifying some of the security properties caused Connector/J ... Version 8.0.29 is the latest General Availability release of the 8.0 series of MySQL ...
https://dev.mysql.com/doc/mysql-ai/9.5/en/mys-mysqlai-ml-train.html
It will cause an error if any part of the training table or predict table has dates outside this range. Selecting more than one model or an unsupported model produces an error. Values in this column must be in a STRING data type, otherwise an error ... Run the ML_TRAIN routine on a training dataset to produce a trained machine learning ...
https://dev.mysql.com/doc/relnotes/mysql-router/9.5/en/news-9-1-0.html
(WL #16466) Bugs Fixed With connection sharing enabled, changing the password of an active connection yielded a vague "Lost connection" error instead of indicating that reauthentication failed. (Bug #36935988) Bootstrapping against a MySQL account ... Functionality Added or Changed Bugs Fixed Functionality Added or Changed Added OpenID Connect support, which is available as of MySQL Enterprise Edition Server ...
https://dev.mysql.com/doc/relnotes/mysql-router/9.5/en/news-9-5-0.html
Errors were returned similar to the following: Error parsing file dynamic state file: Parsing JSON failed at offset 0: The document is empty. Note These release notes were created with the assistance of MySQL HeatWave GenAI. The !SSLv3 filter ...