From ed1e130ef60fa579d2edfa47e1ef42155faacfae Mon Sep 17 00:00:00 2001
From: Gabriel <gabrielleebuaa@gmail.com>
Date: Thu, 23 Jun 2022 09:10:30 +0800
Subject: [PATCH] [BUGFIX] fix wrong children quantity in debug string (#10348)

---
 be/src/vec/exprs/vcompound_pred.h | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/be/src/vec/exprs/vcompound_pred.h b/be/src/vec/exprs/vcompound_pred.h
index 94b7a7292b..5d3e6be25c 100644
--- a/be/src/vec/exprs/vcompound_pred.h
+++ b/be/src/vec/exprs/vcompound_pred.h
@@ -39,11 +39,14 @@ public:
         }
     }
 
-    virtual std::string debug_string() const override {
+    std::string debug_string() const override {
         std::stringstream out;
-        out << "CompoundPredicate {(";
-        out << _children[0]->debug_string() << ") " << _fn.name.function_name << " (";
-        out << _children[1]->debug_string() << ")}";
+        out << "CompoundPredicate {" << _fn.name.function_name;
+        out << " (" << _children[0]->debug_string();
+        if (children().size() > 1) {
+            out << ", " << _children[1]->debug_string();
+        }
+        out << ")}";
         return out.str();
     }
 };