Available on crate feature
compute_nullif
only.Expand description
Returns an Array
with the same type as lhs
and whose validity
is null iff either lhs == rhs
or lhs
is null.
This has the same semantics as postgres - the validity of the rhs is ignored.
Panics
This function panics iff
- The arguments do not have the same logical type
- The arguments do not have the same length
- The physical type is not supported for this operation (use
can_nullif
to check)
Example
let lhs = Int32Array::from(&[None, None, Some(1), Some(1), Some(1)]);
let rhs = Int32Array::from(&[None, Some(1), None, Some(1), Some(0)]);
let result = nullif(&lhs, &rhs);
let expected = Int32Array::from(&[None, None, Some(1), None, Some(1)]);
assert_eq!(expected, result.as_ref());