fix(spark): parse_url returns NULL for malformed URLs when ANSI is off

datafusion/spark/src/function/url/parse_url.rs

@@ -180,8 +180,11 @@ impl ScalarUDFImpl for ParseUrl {
     }
 
     fn invoke_with_args(&self, args: ScalarFunctionArgs) -> Result<ColumnarValue> {
-        let ScalarFunctionArgs { args, .. } = args;
-        make_scalar_function(spark_parse_url, vec![])(&args)
+        let enable_ansi_mode = args.config_options.execution.enable_ansi_mode;
+        make_scalar_function(
+            move |arrays: &[ArrayRef]| spark_parse_url(arrays, enable_ansi_mode),
+            vec![],
+        )(&args.args)
     }
 }
 
@@ -200,8 +203,13 @@ impl ScalarUDFImpl for ParseUrl {
 /// - A string array with extracted URL components
 /// - `None` values where extraction failed or component doesn't exist
 /// - The output array type (StringArray or LargeStringArray) is determined by input types
-fn spark_parse_url(args: &[ArrayRef]) -> Result<ArrayRef> {
-    spark_handled_parse_url(args, |x| x)
+/// Like Spark, a malformed URL errors only when ANSI mode is on; otherwise
+/// the result is NULL (same as `try_parse_url` for parse failures).
+fn spark_parse_url(args: &[ArrayRef], enable_ansi_mode: bool) -> Result<ArrayRef> {
+    spark_handled_parse_url(args, |x| match x {
+        Err(_) if !enable_ansi_mode => Ok(None),
+        result => result,
+    })
 }
 
 pub fn spark_handled_parse_url(
@@ -599,6 +607,27 @@ mod tests {
         Ok(())
     }
 
+    #[test]
+    fn test_malformed_url_null_unless_ansi() -> Result<()> {
+        let urls = sa(&[
+            Some("inva lid://spark.apache.org/path?query=1"),
+            Some("https://example.com/a"),
+        ]);
+        let parts = sa(&[Some("QUERY"), Some("PATH")]);
+
+        let out = spark_parse_url(&[Arc::clone(&urls), Arc::clone(&parts)], false)?;
+        let out_sa = out.as_any().downcast_ref::<StringArray>().unwrap();
+        assert!(out_sa.is_null(0));
+        assert_eq!(out_sa.value(1), "/a");
+
+        let err = spark_parse_url(&[urls, parts], true).unwrap_err();
+        assert!(
+            format!("{err}").contains("The url is invalid"),
+            "unexpected error: {err}"
+        );
+        Ok(())
+    }
+
     #[test]
     fn test_invalid_arg_count() {
         let urls = sa(&[Some("https://example.com")]);

datafusion/sqllogictest/test_files/spark/url/parse_url.slt

@@ -330,9 +330,29 @@ NULL
 statement error 'parse_url' does not support zero arguments
 SELECT parse_url();
 
+# Malformed URL: NULL when ANSI is off (DataFusion default), error when on — matches Spark.
+query T
+SELECT parse_url('inva lid://spark.apache.org/path?query=1', 'QUERY');
+----
+NULL
+
+query T
+SELECT parse_url('http://example.com:99999/', 'HOST');
+----
+NULL
+
+statement ok
+set datafusion.execution.enable_ansi_mode = true;
+
 query error DataFusion error: Execution error: The url is invalid: inva lid://spark\.apache\.org/path\?query=1\. Use `try_parse_url` to tolerate invalid URL and return NULL instead\. SQLSTATE: 22P02
 SELECT parse_url('inva lid://spark.apache.org/path?query=1', 'QUERY');
 
+query error DataFusion error: Execution error: InvalidPort
+SELECT parse_url('http://example.com:99999/', 'HOST');
+
+statement ok
+set datafusion.execution.enable_ansi_mode = false;
+
 # NULL argument handling (Sail PR #1393)
 # NULL URL should return NULL
 query T