[FEAT MERGE]4_2_sql_feature

Co-authored-by: yinyj17 <yinyijun92@gmail.com>
Co-authored-by: xianyu-w <707512433@qq.com>
Co-authored-by: jingtaoye35 <1255153887@qq.com>

src/sql/optimizer/ob_explain_log_plan.h

@@ -28,6 +28,8 @@ namespace sql
   protected:
     virtual int generate_normal_raw_plan() override;
   private:
+    int check_explain_generate_plan_with_outline(ObLogPlan *real_plan);
+    int check_has_win_func(const ObDMLStmt *stmt, bool &has_win_func);
     DISALLOW_COPY_AND_ASSIGN(ObExplainLogPlan);
   };
 }