coderfender commented on code in PR #3559:
URL: https://github.com/apache/datafusion-comet/pull/3559#discussion_r2893127283
##########
native/spark-expr/src/conversion_funcs/numeric.rs:
##########
@@ -913,6 +963,56 @@ pub(crate) fn cast_int_to_timestamp(
Ok(Arc::new(builder.finish().with_timezone_opt(target_tz.clone())) as
ArrayRef)
}
+pub(crate) fn cast_decimal_to_timestamp(
+ array_ref: &ArrayRef,
+ target_tz: &Option<Arc<str>>,
+ scale: i8,
+) -> SparkResult<ArrayRef> {
+ let arr = array_ref.as_primitive::<Decimal128Type>();
+ let scale_factor = 10_i128.pow(scale as u32);
+ let mut builder = TimestampMicrosecondBuilder::with_capacity(arr.len());
+
+ for i in 0..arr.len() {
+ if arr.is_null(i) {
+ builder.append_null();
+ } else {
+ let value = arr.value(i);
+ // Note: spark's big decimal
Review Comment:
Thank you for the comment. I fixed the error message
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