comphead commented on code in PR #1921:
URL: https://github.com/apache/datafusion-comet/pull/1921#discussion_r2162731604
##########
native/core/src/execution/planner.rs:
##########
@@ -746,6 +746,22 @@ impl PhysicalPlanner {
let child = self.create_expr(expr.child.as_ref().unwrap(),
input_schema)?;
Ok(Arc::new(ToJson::new(child, &expr.timezone)))
}
+ ExprStruct::ToPrettyString(expr) => {
+ let mut spark_cast_options =
+ SparkCastOptions::new(EvalMode::Try, &expr.timezone, true);
+ spark_cast_options.null_string = "NULL".to_string();
+ let child = self.create_expr(expr.child.as_ref().unwrap(),
input_schema)?;
+ let cast = Arc::new(Cast::new(
+ Arc::clone(&child),
+ DataType::Utf8,
+ spark_cast_options,
+ ));
+ Ok(Arc::new(IfExpr::new(
+ Arc::new(IsNullExpr::new(child)),
+
Arc::new(Literal::new(ScalarValue::Utf8(Some("NULL".to_string())))),
Review Comment:
```suggestion
Arc::new(Literal::new(ScalarValue::Utf8(Some(spark_cast_options.null_string)))),
```
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