phillipleblanc commented on code in PR #12605:
URL: https://github.com/apache/datafusion/pull/12605#discussion_r1774288306
##########
datafusion/sql/src/unparser/plan.rs:
##########
@@ -542,10 +542,10 @@ impl Unparser<'_> {
right: Box::new(input_exprs[1].clone()),
};
- query
- .as_mut()
- .expect("to have a query builder")
- .body(Box::new(union_expr));
+ let Some(query) = query.as_mut() else {
+ return internal_err!("to have a query builder");
Review Comment:
```suggestion
return internal_err!("UNION ALL operator only valid in a
statement context");
```
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