feat: Support cast between Decimal and Null

Can drop this after rebase on commit 9e8c1bf "Support casting NULL to/from Decimal (apache#1922)", first released in 17.0.0
cube-js · Aug 21, 2024 · 796bfcc · 796bfcc
1 parent 75e78a8
commit 796bfcc
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/arrow/src/compute/kernels/cast.rs b/arrow/src/compute/kernels/cast.rs
@@ -90,6 +90,7 @@ pub fn can_cast_types(from_type: &DataType, to_type: &DataType) -> bool {
             | Int64
             | UInt64
             | Float64
+            | Decimal(_, _)
             | Date64
             | Timestamp(_, _)
             | Time64(_)
@@ -121,6 +122,7 @@ pub fn can_cast_types(from_type: &DataType, to_type: &DataType) -> bool {
             | Int64
             | UInt64
             | Float64
+            | Decimal(_, _)
             | Date64
             | Timestamp(_, _)
             | Time64(_)
@@ -447,6 +449,7 @@ pub fn cast_with_options(
                 Float64 => {
                     cast_decimal_to_float!(array, scale, Float64Builder, f64)
                 }
+                Null => Ok(new_null_array(to_type, array.len())),
                 _ => Err(ArrowError::CastError(format!(
                     "Casting from {:?} to {:?} not supported",
                     from_type, to_type
@@ -475,6 +478,7 @@ pub fn cast_with_options(
                 Float64 => {
                     cast_floating_point_to_decimal!(array, Float64Array, precision, scale)
                 }
+                Null => Ok(new_null_array(to_type, array.len())),
                 _ => Err(ArrowError::CastError(format!(
                     "Casting from {:?} to {:?} not supported",
                     from_type, to_type