tuple_first_n — Select the first elements of a tuple.
tuple_first_n selects the first elements of Tuple and returns them with Selected. Thus, Selected contains all elements of Tuple from the first element up to the “n-th” element of Tuple (including the “n-th” element). The index “n” is determined by the input parameter Index. Thus, Index must contain a single integer value (if Index consists of a floating point number, this must represent an integer value without fraction). Indices of tuple elements start at 0, that means, the first tuple element has got the index 0.
Index of the last element to select.
Selected tuple elements.
tuple_last_n, tuple_select, tuple_last_n, tuple_str_bit_select, tuple_concat, tuple_select_mask