minor: fix doc/typo

apache · Aug 19, 2023 · 7211a48 · 7211a48
1 parent 74320d8
commit 7211a48
Showing 1 changed file with 2 additions and 9 deletions.
diff --git a/datafusion/expr/src/logical_plan/builder.rs b/datafusion/expr/src/logical_plan/builder.rs
@@ -593,15 +593,8 @@ impl LogicalPlanBuilder {
 
     /// Apply a union, removing duplicate rows
     pub fn union_distinct(self, plan: LogicalPlan) -> Result<Self> {
-        // unwrap top-level Distincts, to avoid duplication
-        let left_plan: LogicalPlan = match self.plan {
-            LogicalPlan::Distinct(Distinct { input }) => (*input).clone(),
-            _ => self.plan,
-        };
-        let right_plan: LogicalPlan = match plan {
-            LogicalPlan::Distinct(Distinct { input }) => (*input).clone(),
-            _ => plan,
-        };
+        let left_plan: LogicalPlan = self.plan;
+        let right_plan: LogicalPlan = plan;
 
         Ok(Self::from(LogicalPlan::Distinct(Distinct {
             input: Arc::new(union(left_plan, right_plan)?),