[opt](nereids) refine operator estimation

xzj7019 · Sep 13, 2024 · c33af1f · c33af1f
1 parent 1d2fbd5
commit c33af1f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/ExpressionEstimation.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/ExpressionEstimation.java
@@ -243,7 +243,7 @@ public ColumnStatistic visitLiteral(Literal literal, Statistics context) {
                 .setMaxValue(literalVal)
                 .setMinValue(literalVal)
                 .setNdv(1)
-                .setNumNulls(1)
+                .setNumNulls(literal.isNullLiteral() ? 1 : 0)
                 .setAvgSizeByte(1)
                 .setMinExpr(literal.toLegacyLiteral())
                 .setMaxExpr(literal.toLegacyLiteral())