[CALCITE-6615] BindableTableScan estimateRowCount does not calculate …

…push down filters
kgyrtkirk · Nov 13, 2024 · f14e944 · f14e944
1 parent af4391d
commit f14e944
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/core/src/main/java/org/apache/calcite/interpreter/Bindables.java b/core/src/main/java/org/apache/calcite/interpreter/Bindables.java
@@ -269,6 +269,11 @@ public static BindableTableScan create(RelOptCluster cluster,
           .itemIf("projects", projects, !projects.equals(identity()));
     }
 
+    @Override public double estimateRowCount(RelMetadataQuery mq) {
+      double f = filters.isEmpty() ? 1d : 0.5d;
+      return super.estimateRowCount(mq) * f;
+    }
+
     @Override public @Nullable RelOptCost computeSelfCost(RelOptPlanner planner,
         RelMetadataQuery mq) {
       boolean noPushing = filters.isEmpty()