jayzhan211 commented on code in PR #11371:
URL: https://github.com/apache/datafusion/pull/11371#discussion_r1676046289
##########
datafusion/expr/src/planner.rs:
##########
@@ -161,6 +162,28 @@ pub trait ExprPlanner: Send + Sync {
) -> Result<PlannerResult<Vec<Expr>>> {
Ok(PlannerResult::Original(args))
}
+
+ /// Plans a `RawAggregateUDF` based on the given input expressions.
+ ///
+ /// Returns a `PlannerResult` containing either the planned aggregate
function or the original
+ /// input expressions if planning is not possible.
+ fn plan_aggregate_udf(
+ &self,
+ aggregate_function: RawAggregateUDF,
+ ) -> Result<PlannerResult<RawAggregateUDF>> {
+ Ok(PlannerResult::Original(aggregate_function))
Review Comment:
What I'm think of dataframe API is that we only provide one `count_star()`
function, so we don't need to deal with function rewrite for dataframe APIs.
For sql, `count()`, `count(1)` and `count(*)` are equivalent things that can
all to one single Expr, so I think it is possible to have the conversion in
planner.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org
For additional commands, e-mail: github-h...@datafusion.apache.org
