Merge pull request ClickHouse#80330 from UnamedRus/fix-distinct-description-after-union

devcrafter · web-flow · commit 7f8c9ec2d0f7 · 2025-05-22T10:54:59.000Z
fix description of distinct step after union lift up optimization
diff --git a/src/Processors/QueryPlan/Optimizations/liftUpUnion.cpp b/src/Processors/QueryPlan/Optimizations/liftUpUnion.cpp
@@ -89,6 +89,8 @@ size_t tryLiftUpUnion(QueryPlan::Node * parent_node, QueryPlan::Nodes & nodes, c
                 distinct->getLimitHint(),
                 distinct->getColumnNames(),
                 distinct->isPreliminary());
+
+            distinct_node.step->setStepDescription(distinct->getStepDescription());
         }
 
         ///       - Distinct - Something

Original file line number	Diff line number	Diff line change
`@@ -89,6 +89,8 @@ size_t tryLiftUpUnion(QueryPlan::Node * parent_node, QueryPlan::Nodes & nodes, c`
`89`	`89`	`distinct->getLimitHint(),`
`90`	`90`	`distinct->getColumnNames(),`
`91`	`91`	`distinct->isPreliminary());`
	`92`	`+`
	`93`	`+ distinct_node.step->setStepDescription(distinct->getStepDescription());`
`92`	`94`	`}`
`93`	`95`
`94`	`96`	`/// - Distinct - Something`