my_bool mysql_stmt_send_long_data(MYSQL_STMT * stmt, unsigned int, const char * data, unsigned long);
stmt- a statement handle, which was previously allocated by mysql_stmt_init().
param_no- indicates which parameter to associate the data with. Parameters are numbered beginning with 0.
data- a buffer containing the data to send.
long- size of the data buffer.
Allows sending parameter data to the server in pieces (or chunks), e.g. if the size of a blob exceeds the size of max_allowed_packet. This function can be called multiple times to send the parts of a character or binary data value for a column, which must be one of the TEXT or BLOB datatypes.
Returns zero on success, nonzero if an error occurred.