Function mariadb_sys::handler_index_read_idx_map

pub unsafe extern "C" fn handler_index_read_idx_map(
    this: *mut c_void,
    buf: *mut uchar,
    index: uint,
    key: *const uchar,
    keypart_map: key_part_map,
    find_flag: Type
) -> c_int

Positions an index cursor to the index specified in the handle. Fetches the row if available. If the key value is null, begin at the first key of the index.