devanbenz commented on code in PR #12466:
URL: https://github.com/apache/datafusion/pull/12466#discussion_r1768853375
##########
datafusion/sql/src/statement.rs:
##########
@@ -1136,14 +1136,29 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
schema: &DFSchemaRef,
planner_context: &mut PlannerContext,
) -> Result<Vec<Vec<SortExpr>>> {
- // Ask user to provide a schema if schema is empty.
+ let mut all_results = vec![];
if !order_exprs.is_empty() && schema.fields().is_empty() {
- return plan_err!(
- "Provide a schema before specifying the order while creating a
table."
- );
+ let mut results = vec![];
+ for expr in order_exprs {
+ for ordered_expr in expr {
+ let order_expr = ordered_expr.expr.to_owned();
+ let order_expr = self.sql_expr_to_logical_expr(
+ order_expr,
+ schema,
+ planner_context,
+ )?;
+ let nulls_first = ordered_expr.nulls_first.unwrap_or(true);
Review Comment:
For /datafusion/sql/src/expr/order_by.rs#L40-L39 I was thinking about
modifying it so it could build an order_by without a schema. I think that since
this is the only area (maybe) where this would be used maybe its not worth
modifying a code path like that though.
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