diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/PlanBuilder.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/PlanBuilder.java
index fb1729480f5e..7d8cfa961103 100644
--- a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/PlanBuilder.java
+++ b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/PlanBuilder.java
@@ -132,8 +132,7 @@ public <T extends Expression> PlanBuilder appendProjections(
       // or that are duplicated in the list of exp
       if (!mappings.containsKey(scopeAwareKey(expression, analysis, translations.getScope()))
           && !alreadyHasTranslation.test(translations, expression)) {
-        Symbol symbol =
-            symbolAllocator.newSymbol(expression.toString(), analysis.getType(expression));
+        Symbol symbol = symbolAllocator.newSymbol(expression, analysis.getType(expression));
         queryContext.getTypeProvider().putTableModelType(symbol, analysis.getType(expression));
         projections.put(symbol, rewriter.apply(translations, expression));
         mappings.put(scopeAwareKey(expression, analysis, translations.getScope()), symbol);
diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/QueryPlanner.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/QueryPlanner.java
index a44ee2f7bf62..8eaca681005e 100644
--- a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/QueryPlanner.java
+++ b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/QueryPlanner.java
@@ -209,7 +209,7 @@ private static List<Symbol> computeOutputs(
         FieldReference reference = (FieldReference) expression;
         symbol = builder.getFieldSymbols()[reference.getFieldIndex()];
       }
-      outputSymbols.add(symbol != null ? symbol : new Symbol(expression.toString()));
+      outputSymbols.add(symbol != null ? symbol : builder.translate(expression));
     }
     return outputSymbols.build();
   }