From 5d5db157d01c10d08450dbcdd53de0a0e0358187 Mon Sep 17 00:00:00 2001
From: mch_ucchi <41606806+sohardforaname@users.noreply.github.com>
Date: Wed, 17 May 2023 19:54:29 +0800
Subject: [PATCH] [Fix](planner) fix literal type incompatible after fold
 constant by be. (#19190)

---
 .../main/java/org/apache/doris/rewrite/FoldConstantsRule.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fe/fe-core/src/main/java/org/apache/doris/rewrite/FoldConstantsRule.java b/fe/fe-core/src/main/java/org/apache/doris/rewrite/FoldConstantsRule.java
index 1458631cc6..fe63bec342 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/rewrite/FoldConstantsRule.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/rewrite/FoldConstantsRule.java
@@ -323,7 +323,7 @@ public class FoldConstantsRule implements ExprRewriteRule {
         // ATTN: make sure the child order of expr keep unchanged
         for (int i = 0; i < expr.getChildren().size(); i++) {
             Expr child = expr.getChild(i);
-            if (literalExpr.equals(replaceExpr(child, key, literalExpr))) {
+            if (!(child instanceof LiteralExpr) && literalExpr.equals(replaceExpr(child, key, literalExpr))) {
                 literalExpr.setId(child.getId());
                 expr.setChild(i, literalExpr);
                 break;