[opt](Nereids) use 1 instead narrowest column when do column pruning

apache · Oct 8, 2024 · 9454ee5 · 9454ee5
1 parent 4b8375f
commit 9454ee5
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalProject.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalProject.java
@@ -29,6 +29,7 @@
 import org.apache.doris.nereids.trees.expressions.Slot;
 import org.apache.doris.nereids.trees.expressions.functions.NoneMovableFunction;
 import org.apache.doris.nereids.trees.expressions.functions.scalar.Uuid;
+import org.apache.doris.nereids.trees.expressions.literal.TinyIntLiteral;
 import org.apache.doris.nereids.trees.plans.Plan;
 import org.apache.doris.nereids.trees.plans.PlanType;
 import org.apache.doris.nereids.trees.plans.algebra.Project;
@@ -85,7 +86,7 @@ private LogicalProject(List<NamedExpression> projects, boolean isDistinct,
         Preconditions.checkArgument(!projects.isEmpty() || !(child instanceof Unbound),
                 "projects can not be empty when child plan is unbound");
         this.projects = projects.isEmpty()
-                ? ImmutableList.of(ExpressionUtils.selectMinimumColumn(child.get(0).getOutput()))
+                ? ImmutableList.of(new Alias(new TinyIntLiteral((byte) 1)))
                 : projects;
         this.projectsSet = Suppliers.memoize(() -> ImmutableSet.copyOf(this.projects));
         this.isDistinct = isDistinct;