diff --git a/deps/oblib/src/common/object/ob_obj_type.h b/deps/oblib/src/common/object/ob_obj_type.h
index 37e84aa4c5..a59c23fbb3 100644
--- a/deps/oblib/src/common/object/ob_obj_type.h
+++ b/deps/oblib/src/common/object/ob_obj_type.h
@@ -1395,7 +1395,8 @@ inline bool ob_is_unsigned_type(ObObjType type)
           || ObYearType == type
           || ObUFloatType == type
           || ObUDoubleType == type
-          || ObUNumberType == type;
+          || ObUNumberType == type
+          || ObBitType == type;
 }
 bool is_match_alter_integer_column_online_ddl_rules(const common::ObObjMeta& src_meta,
                                                     const common::ObObjMeta& dst_meta);
diff --git a/src/sql/resolver/expr/ob_raw_expr_deduce_type.cpp b/src/sql/resolver/expr/ob_raw_expr_deduce_type.cpp
index 8305df24ce..9e3e7adaec 100644
--- a/src/sql/resolver/expr/ob_raw_expr_deduce_type.cpp
+++ b/src/sql/resolver/expr/ob_raw_expr_deduce_type.cpp
@@ -1423,6 +1423,7 @@ int ObRawExprDeduceType::visit(ObAggFunRawExpr &expr)
     LOG_WARN("failed to check group aggr param", K(ret));
   } else {
     bool need_add_cast = false;
+    bool override_calc_meta = true;
     switch (expr.get_expr_type()) {
       //count_sum是在分布式的count(*)中上层为了避免select a, count(a) from t1这种语句a出现NULL这种非期望值
       //而生成的内部表达式
@@ -1497,11 +1498,13 @@ int ObRawExprDeduceType::visit(ObAggFunRawExpr &expr)
           LOG_WARN("param expr is null", K(expr));
         } else {
           result_type.set_type(ObUInt64Type);
-          result_type.set_calc_type(result_type.get_type());
+          result_type.set_calc_type(ob_is_unsigned_type(child_expr->get_data_type()) ?
+            ObUInt64Type : ObIntType);
+          override_calc_meta = false;
           result_type.set_accuracy(ObAccuracy::MAX_ACCURACY2[0/*is_oracle*/][ObUInt64Type]);
           expr.set_result_type(result_type);
           ObObjTypeClass from_tc = child_expr->get_type_class();
-          need_add_cast = (ObUIntTC != from_tc && ObIntTC != from_tc);
+          need_add_cast = (ObUIntTC != from_tc && ObIntTC != from_tc && ObBitTC != from_tc);
         }
         break;
       }
@@ -1927,8 +1930,11 @@ int ObRawExprDeduceType::visit(ObAggFunRawExpr &expr)
     }
     LOG_DEBUG("aggregate function deduced result type", K(result_type), K(need_add_cast), K(expr));
     if (OB_SUCC(ret) && need_add_cast) {
-      result_type.set_calc_type(result_type.get_type());
-      result_type.set_calc_accuracy(result_type.get_accuracy());
+      if (override_calc_meta) {
+        result_type.set_calc_type(result_type.get_type());
+        result_type.set_calc_accuracy(result_type.get_accuracy());
+        result_type.set_calc_meta(result_type.get_obj_meta());
+      }
       if (T_FUN_AVG == expr.get_expr_type() && -2 != scale_increment_recover) {
         result_type.set_calc_scale(scale_increment_recover);
       }
@@ -3500,7 +3506,6 @@ int ObRawExprDeduceType::add_implicit_cast(ObAggFunRawExpr &parent,
 {
   int ret = OB_SUCCESS;
   ObExprResType res_type = parent.get_result_type();
-  res_type.set_calc_meta(res_type.get_obj_meta());
   ObIArray<ObRawExpr*> &real_param_exprs = parent.get_real_param_exprs_for_update();
   for (int64_t i = 0; OB_SUCC(ret) && i < real_param_exprs.count(); ++i) {
     ObRawExpr *&child_ptr = real_param_exprs.at(i);