liukun4515 commented on a change in pull request #1074:
URL: https://github.com/apache/arrow-rs/pull/1074#discussion_r775446288



##########
File path: arrow/src/compute/kernels/comparison.rs
##########
@@ -898,6 +900,305 @@ pub fn gt_eq_utf8_scalar<OffsetSize: 
StringOffsetSizeTrait>(
     compare_op_scalar!(left, right, |a, b| a >= b)
 }
 
+macro_rules! dyn_compare_scalar {
+    ($LEFT: expr, $RIGHT: expr, $OP: ident) => {{
+        let right: i128 = $RIGHT.try_into().map_err(|_| {
+            ArrowError::ComputeError(String::from("Can not convert scalar to 
i128"))
+        })?;
+        match $LEFT.data_type() {
+            DataType::Int8 => {
+                let right: i8 = right.try_into().map_err(|_| {
+                    ArrowError::ComputeError(String::from(
+                        "Can not convert scalar to i128",

Review comment:
       `Can not convert scalar to i128` -> `Can not convert scalar to i8`




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