eejbyfeldt commented on code in PR #12608:
URL: https://github.com/apache/datafusion/pull/12608#discussion_r1774864320
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datafusion/sql/src/planner.rs:
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@@ -197,9 +197,9 @@ impl PlannerContext {
/// extends the FROM schema, returning the existing one, if any
pub fn extend_outer_from_schema(&mut self, schema: &DFSchemaRef) ->
Result<()> {
- self.outer_from_schema = match self.outer_from_schema.as_ref() {
- Some(from_schema) => Some(Arc::new(from_schema.join(schema)?)),
- None => Some(Arc::clone(schema)),
+ match self.outer_from_schema.as_mut() {
+ Some(from_schema) => Arc::make_mut(from_schema).merge(schema),
+ None => self.outer_from_schema = Some(Arc::clone(schema)),
Review Comment:
@aalexandrov Can you help verify that this is correct?
I am not fully following your comment here:
https://github.com/apache/datafusion/pull/11456#discussion_r1677146980 At least
in the current code merge will still have both values for `j1_id` since they
will have different qualifiers.
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