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https://dev.mysql.com/doc/c-api/8.4/en/mysql-library-init.html
Note To avoid memory leaks after the application is done using the library (for example, after closing the connection to the server), be sure to call mysql_library_end() explicitly. int mysql_library_init(int argc, char **argv, char **groups) ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-list-dbs.html
CR_SERVER_LOST The connection to the server was lost during the query. MYSQL_RES * mysql_list_dbs(MYSQL *mysql, const char *wild) Description Returns a result set consisting of database names on the server that match the simple regular expression ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-list-fields.html
CR_SERVER_LOST The connection to the server was lost during the query. MYSQL_RES * mysql_list_fields(MYSQL *mysql, const char *table, const char *wild) Description Note mysql_list_fields() is deprecated and is subject to removal in a future version ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-list-processes.html
CR_SERVER_LOST The connection to the server was lost during the query. MYSQL_RES * mysql_list_processes(MYSQL *mysql) Description Note mysql_list_processes() is deprecated and is subject to removal in a future version of MySQL. Instead, use ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-list-tables.html
CR_SERVER_LOST The connection to the server was lost during the query. MYSQL_RES * mysql_list_tables(MYSQL *mysql, const char *wild) Description Returns a result set consisting of table names in the current database that match the simple regular ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-query.html
CR_SERVER_LOST The connection to the server was lost during the query. int mysql_query(MYSQL *mysql, const char *stmt_str) Description Executes the SQL statement pointed to by the null-terminated string stmt_str. Normally, the string must consist ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-real-query.html
CR_SERVER_LOST The connection to the server was lost during the query. int mysql_real_query(MYSQL *mysql, const char *stmt_str, unsigned long length) Description Note mysql_real_query() is a synchronous function. Its asynchronous counterpart is ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-reset-server-public-key.html
In such cases, connection failure can occur due to key mismatch. void mysql_reset_server_public_key(void) Description Clears from the client library any cached copy of the public key required by the server for RSA key pair-based password exchange.
https://dev.mysql.com/doc/c-api/8.4/en/mysql-result-metadata.html
It can be useful for metadata-optional connections when the client does not know in advance whether particular result sets have metadata. enum enum_resultset_metadata mysql_result_metadata(MYSQL_RES *result) Description mysql_result_metadata() ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-server-end.html
Note To avoid memory leaks after the application is done using the library (for example, after closing the connection to the server), be sure to call mysql_server_end() (or mysql_library_end()) explicitly. void mysql_server_end(void) Description ...