diff --git a/native-engine/datafusion-ext-commons/src/arrow/cast.rs b/native-engine/datafusion-ext-commons/src/arrow/cast.rs
index 63f8a8d2..17a3b343 100644
--- a/native-engine/datafusion-ext-commons/src/arrow/cast.rs
+++ b/native-engine/datafusion-ext-commons/src/arrow/cast.rs
@@ -229,7 +229,7 @@ fn to_plain_string_array(array: &dyn Array) -> ArrayRef {
                 // support to convert scientific notation
                 if s.contains('e') || s.contains('E') {
                     match BigDecimal::from_str(s) {
-                        Ok(decimal) => converted_values.push(Some(decimal.to_string())),
+                        Ok(decimal) => converted_values.push(Some(decimal.to_plain_string())),
                         Err(_) => converted_values.push(Some(s.to_string())),
                     }
                 } else {
@@ -440,6 +440,7 @@ mod test {
     fn test_string_to_decimal() {
         let string_array: ArrayRef = Arc::new(StringArray::from_iter(vec![
             None,
+            Some("1e-8"),
             Some("1.012345678911111111e10"),
             Some("1.42e-6"),
             Some("0.00000142"),
@@ -453,6 +454,7 @@ mod test {
             as_decimal128_array(&casted).unwrap(),
             &Decimal128Array::from_iter(vec![
                 None,
+                Some(10000000000),
                 Some(10123456789111111110000000000i128),
                 Some(1420000000000),
                 Some(1420000000000),
diff --git a/native-engine/datafusion-ext-plans/src/scan/mod.rs b/native-engine/datafusion-ext-plans/src/scan/mod.rs
index 05010eac..f25f7310 100644
--- a/native-engine/datafusion-ext-plans/src/scan/mod.rs
+++ b/native-engine/datafusion-ext-plans/src/scan/mod.rs
@@ -171,7 +171,7 @@ fn schema_adapter_cast_column(col: &ArrayRef, data_type: &DataType) -> Result<Ar
             DataType::Int16 => handle_decimal!(Int16, Decimal128, i128, *prec, *scale),
             DataType::Int32 => handle_decimal!(Int32, Decimal128, i128, *prec, *scale),
             DataType::Int64 => handle_decimal!(Int64, Decimal128, i128, *prec, *scale),
-            DataType::Decimal128(p, s) => {
+            DataType::Decimal128(..) => {
                 datafusion_ext_commons::arrow::cast::cast_scan_input_array(col.as_ref(), data_type)
             }
             _ => df_execution_err!(