geoffreyclaude commented on code in PR #17843:
URL: https://github.com/apache/datafusion/pull/17843#discussion_r2531567327
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datafusion/core/src/execution/context/mod.rs:
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@@ -1365,6 +1367,18 @@ impl SessionContext {
self.state.write().register_udwf(Arc::new(f)).ok();
}
+ #[cfg(feature = "sql")]
+ /// Registers a [`RelationPlanner`] to customize SQL table-factor planning.
+ ///
+ /// Planners are invoked in reverse registration order, allowing newer
+ /// planners to take precedence over existing ones.
Review Comment:
I've updated the tests: now `lifo_precedence_last_planner_wins` should
clearly show precedence rules. I'm not sure what happened with the previous
precedence test which was completely useless 😄
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