viirya commented on code in PR #8402:
URL: https://github.com/apache/arrow-datafusion/pull/8402#discussion_r1413011160
##########
datafusion/sql/src/expr/function.rs:
##########
@@ -90,10 +91,30 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
let partition_by = window
.partition_by
.into_iter()
+ // ignore window spec PARTITION BY for scalar values
+ .filter(|e| !matches!(e, sqlparser::ast::Expr::Value { .. }))
.map(|e| self.sql_expr_to_logical_expr(e, schema,
planner_context))
.collect::<Result<Vec<_>>>()?;
- let order_by =
- self.order_by_to_sort_expr(&window.order_by, schema,
planner_context)?;
+
+ let order_by = self.order_by_to_sort_expr(
+ &window
+ .order_by
+ .into_iter()
+ // ignore window spec ORDER BY for scalar values
+ .filter(|e| {
+ !matches!(
+ e,
+ OrderByExpr {
+ expr: sqlparser::ast::Expr::Value { .. },
+ ..
+ }
+ )
Review Comment:
Hmm, as in `coerce_window_frame` the first order by expression's datatype is
used to coerce start bound and end bound of Range window frame. If the only one
order by expr is scalar, which is filtered out here, won't it return error?
```rust
if let Some(col_type) = current_types.first() {
...
} else {
return internal_err!("ORDER BY column cannot be empty");
}
```
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