From c98147375d2d7db73eade0783882b8c4cbd33e2e Mon Sep 17 00:00:00 2001
From: Zhang Wenxin <101034200+morrySnow@users.noreply.github.com>
Date: Wed, 17 May 2023 10:36:04 +0800
Subject: [PATCH] [fix](Nereids) decimal compare float should use double as
 common type (#19710)

---
 .../java/org/apache/doris/nereids/util/TypeCoercionUtils.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/util/TypeCoercionUtils.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/util/TypeCoercionUtils.java
index ce573d587a..2301bc38dc 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/util/TypeCoercionUtils.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/util/TypeCoercionUtils.java
@@ -939,6 +939,10 @@ public class TypeCoercionUtils {
         }
 
         // numeric
+        if (leftType.isFloatType() || leftType.isDoubleType()
+                || rightType.isFloatType() || rightType.isDoubleType()) {
+            return Optional.of(DoubleType.INSTANCE);
+        }
         if (leftType.isNumericType() && rightType.isNumericType()) {
             DataType commonType = leftType;
             for (DataType dataType : NUMERIC_PRECEDENCE) {