max_elem_ifdefined

ordering-functions maximum element ifdefined

syntax

  • max_elem_ifdefined(a, b, .. , n)

definition

max_elem_ifdefined(a, b, .. , n) is a variant of the max_elem function resulting in defined values if any value of the argument for an entry in the domain-unit is defined. If all arguments contains null values, the resulting value for that entry will be become null.

since version

8.6.5

example

attribute<uint32> max_elem_ifdefinedABC (MDomain) := max_elem_ifdefined(A, B, C);
A(int32) B(int32) C(int32) max_elem_ifdefinedABC
0 1 2 2
1 -1 4 4
-2 2 2 2
4 0 7 7
999 111 -5 999
2 null 1 2
0 1 null 1
null 1 2 2
null null null null

MDomain, nr of rows = 9

see also