maxIgnoreNull
Syntax
maxIgnoreNull(X, Y)Arguments
X and Y can be a numeric, LITERAL or TEMPORAL scalar, pair, vector or matrix.
Details
A binary scalar function that returns the maximum by comparing X with Y.
Difference between max and maxIgnoreNull:
-
max: Null values are treated as the minimum value if nullAsMinValueForComparison=true, otherwise comparison involving null values returns NULL. -
maxIgnoreNull: Null values are ignored in comparison and non-null maximum is returned. If both elements in X and Y are null, NULL is returned. This function is not affected by configuration parameter nullAsMinValueForComparison.
Examples
maxIgnoreNull(2,matrix(1 NULL 4,-1 4 0)) | #0 | #1 |
|---|---|
| 2 | 2 |
| 2 | 4 |
| 4 | 2 |
maxIgnoreNull(matrix(10 3 NULL, 1 7 4),matrix(1 NULL 4,-1 4 0))| #0 | #1 |
| 10 | 1 |
| 3 | 7 |
| -4 | 4 |
Use minIgnoreNull with reduce to calculate the
minimum for matrices of the same shape stored in a tuple:
n1 = matrix(1 1 1, 5 5 5)
n2 = matrix(10 11 12, 0 NULL -5)
n3 = matrix(-1 1 NULL, -3 0 10)
reduce(minIgnoreNull, [n1,n2,n3])| #0 | #1 |
|---|---|
| 10 | 5 |
| 11 | 5 |
| 12 | 10 |
Related function: minIgnoreNull