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https://dev.mysql.com/doc/c-api/8.4/en/mysql-fetch-lengths.html
unsigned long * mysql_fetch_lengths(MYSQL_RES *result) Description Returns the lengths of the columns of the current row within a result set. If you plan to copy field values, this length information is also useful for optimization, because you can ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-field-count.html
unsigned int mysql_field_count(MYSQL *mysql) Description Returns the number of columns for the most recent query on the connection. The normal use of this function is when mysql_store_result() returned NULL (and thus you have no result set pointer). In this case, you can call mysql_field_count() to determine whether mysql_store_result() should have produced a nonempty ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-get-proto-info.html
unsigned int mysql_get_proto_info(MYSQL *mysql) Description Returns the protocol version used by current connection. Return Values An unsigned integer representing the protocol version used by the current connection.
https://dev.mysql.com/doc/c-api/8.4/en/mysql-next-result-nonblocking.html
enum net_async_status mysql_next_result_nonblocking(MYSQL *mysql) Description Note mysql_next_result_nonblocking() is an asynchronous function. It is the counterpart of the mysql_next_result() synchronous function, for use by applications that ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-num-fields.html
unsigned int mysql_num_fields(MYSQL_RES *result) To pass a MYSQL* argument instead, use unsigned int mysql_field_count(MYSQL *mysql). You can get the number of columns either from a pointer to a result set or to a connection handler. You would use ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-real-query-nonblocking.html
enum net_async_status mysql_real_query_nonblocking(MYSQL *mysql, const char *stmt_str, unsigned long length) Description Note mysql_real_query_nonblocking() is an asynchronous function. It is the counterpart of the mysql_real_query() synchronous ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-stmt-field-count.html
unsigned int mysql_stmt_field_count(MYSQL_STMT *stmt) Description Returns the number of columns for the most recent statement for the statement handler. This value is zero for statements such as INSERT or DELETE that do not produce result sets.
https://dev.mysql.com/doc/c-api/8.4/en/mysql-stmt-param-count.html
unsigned long mysql_stmt_param_count(MYSQL_STMT *stmt) Description Returns the number of parameter markers present in the prepared statement. Return Values An unsigned long integer representing the number of parameters in a statement.
https://dev.mysql.com/doc/extending-mysql/8.4/en/client-plugin-descriptors.html
Each client plugin must have a descriptor that provides information to the client plugin API. The descriptor structure begins with a fixed set of members common to all client plugins, followed by any members specific to the plugin type. This must ...
https://dev.mysql.com/doc/extending-mysql/8.4/en/writing-full-text-plugins.html
MySQL supports server-side full-text parser plugins with MyISAM and InnoDB. For introductory information about full-text parser plugins, see Full-Text Parser Plugins. A full-text parser plugin can be used to replace or modify the built-in full-text ...