feat: support Spark-compatible abs math function part 2 - ANSI mode

datafusion/execution/src/config.rs

@@ -480,6 +480,12 @@ impl SessionConfig {
         self.options.execution.enforce_batch_size_in_joins
     }
 
+    /// Toggle SQL ANSI mode for expressions, casting, and error handling
+    pub fn with_enable_ansi_mode(mut self, enable_ansi_mode: bool) -> Self {
+        self.options_mut().execution.enable_ansi_mode = enable_ansi_mode;
+        self
+    }
+
     /// Convert configuration options to name-value pairs with values
     /// converted to strings.
     ///

datafusion/functions/src/math/abs.rs

@@ -50,6 +50,7 @@ macro_rules! make_abs_function {
     }};
 }
 
+#[macro_export]
 macro_rules! make_try_abs_function {
     ($ARRAY_TYPE:ident) => {{
         |input: &ArrayRef| {
@@ -62,7 +63,8 @@ macro_rules! make_try_abs_function {
                         x
                     ))
                 })
-            })?;
+            })
+            .and_then(|v| Ok(v.with_data_type(input.data_type().clone())))?; // maintain decimal's precision and scale
             Ok(Arc::new(res) as ArrayRef)
         }
     }};