diff --git a/src/sql/optimizer/ob_log_plan.cpp b/src/sql/optimizer/ob_log_plan.cpp
index 2163bbd9c9eb6e2e951f90a642f3c85a0e0917db..783d29967dd09355ef58c4f2fedcd1e77928c7fe 100644
--- a/src/sql/optimizer/ob_log_plan.cpp
+++ b/src/sql/optimizer/ob_log_plan.cpp
@@ -1231,6 +1231,8 @@ int ObLogPlan::pre_process_quals(const ObIArray<TableItem*> &table_items,
       } else {
         ret = add_subquery_filter(qual);
       }
+    } else if (qual->is_const_expr()) {
+      ret = add_startup_filter(qual);
     } else if (qual->has_flag(CNT_RAND_FUNC) ||
                qual->has_flag(CNT_USER_VARIABLE) ||
                qual->has_flag(CNT_PL_UDF) ||
@@ -1238,8 +1240,6 @@ int ObLogPlan::pre_process_quals(const ObIArray<TableItem*> &table_items,
       ret = add_special_expr(qual);
     } else if (ObOptimizerUtil::has_hierarchical_expr(*qual)) {
       ret = normal_quals.push_back(qual);
-    } else if (0 == qual->get_relation_ids().num_members()) {
-      ret = add_startup_filter(qual);
     } else {
       ret = normal_quals.push_back(qual);
     }
diff --git a/src/sql/resolver/dml/ob_dml_stmt.cpp b/src/sql/resolver/dml/ob_dml_stmt.cpp
index 62bbb4ab894a15620af930342d2f25d2c6fd4a8d..97f75aa8ef9ca32daf657cfadea13ef28b21377b 100644
--- a/src/sql/resolver/dml/ob_dml_stmt.cpp
+++ b/src/sql/resolver/dml/ob_dml_stmt.cpp
@@ -2253,6 +2253,22 @@ int ObDMLStmt::get_from_subquery_stmts(ObIArray<ObSelectStmt*> &child_stmts) con
   return ret;
 }
 
+int ObDMLStmt::get_subquery_stmts(common::ObIArray<ObSelectStmt*> &child_stmts) const
+{
+  int ret = OB_SUCCESS;
+  for (int64_t j = 0; OB_SUCC(ret) && j < get_subquery_expr_size(); ++j) {
+    ObQueryRefRawExpr *subquery_ref = subquery_exprs_.at(j);
+    if (OB_ISNULL(subquery_ref) ||
+        OB_ISNULL(subquery_ref->get_ref_stmt())) {
+      ret = OB_ERR_UNEXPECTED;
+      LOG_WARN("subquery reference is null", K(subquery_ref));
+    } else if (OB_FAIL(child_stmts.push_back(subquery_ref->get_ref_stmt()))) {
+      LOG_WARN("stored subquery reference stmt failed", K(ret));
+    }
+  }
+  return ret;
+}
+
 int ObDMLStmt::get_table_item(const ObSQLSessionInfo *session_info,
                               const ObString &database_name,
                               const ObString &object_name,
diff --git a/src/sql/resolver/dml/ob_dml_stmt.h b/src/sql/resolver/dml/ob_dml_stmt.h
index 860dce443807b9dc9c9fab76051ab5307cd1d996..1bdec71f5085af4909a8842c6ed18daf985b465d 100644
--- a/src/sql/resolver/dml/ob_dml_stmt.h
+++ b/src/sql/resolver/dml/ob_dml_stmt.h
@@ -739,6 +739,7 @@ public:
   virtual int remove_useless_sharable_expr();
   virtual int clear_sharable_expr_reference();
   virtual int get_from_subquery_stmts(common::ObIArray<ObSelectStmt*> &child_stmts) const;
+  virtual int get_subquery_stmts(common::ObIArray<ObSelectStmt*> &child_stmts) const;
   int is_referred_by_partitioning_expr(const ObRawExpr *expr,
                                        bool &is_referred);
   int64_t get_table_size() const { return table_items_.count(); }
diff --git a/src/sql/resolver/dml/ob_select_stmt.cpp b/src/sql/resolver/dml/ob_select_stmt.cpp
index f082047792c92da9527e803c052e8507bb708bae..dbca442f61e49c104404fc5018f772fba929e378 100644
--- a/src/sql/resolver/dml/ob_select_stmt.cpp
+++ b/src/sql/resolver/dml/ob_select_stmt.cpp
@@ -869,10 +869,13 @@ int ObSelectStmt::adjust_view_parent_namespace_stmt(ObDMLStmt *new_parent)
   int ret = OB_SUCCESS;
   int32_t subquery_level = (new_parent != NULL ? new_parent->get_current_level() + 1 : 0);
   ObArray<ObSelectStmt *> view_stmts;
+  ObArray<ObSelectStmt *> subquery_stmts;
   set_parent_namespace_stmt(new_parent);
   set_current_level(subquery_level);
   if (OB_FAIL(get_from_subquery_stmts(view_stmts))) {
     LOG_WARN("get from subquery stmts failed", K(ret));
+  } else if (OB_FAIL(get_subquery_stmts(subquery_stmts))) {
+    LOG_WARN("get subquery stmts failed", K(ret));
   }
   for (int64_t i = 0; OB_SUCC(ret) && i < view_stmts.count(); ++i) {
     ObSelectStmt *view_stmt = view_stmts.at(i);
@@ -883,6 +886,15 @@ int ObSelectStmt::adjust_view_parent_namespace_stmt(ObDMLStmt *new_parent)
       LOG_WARN("adjust view parent namespace stmt failed", K(ret));
     }
   }
+  for (int64_t i = 0; OB_SUCC(ret) && i < subquery_stmts.count(); ++i) {
+    ObSelectStmt *subquery = subquery_stmts.at(i);
+    if (OB_ISNULL(subquery)) {
+      ret = OB_ERR_UNEXPECTED;
+      LOG_WARN("table_item is null", K(i));
+    } else if (OB_FAIL(subquery->adjust_view_parent_namespace_stmt(this))) {
+      LOG_WARN("adjust subquery parent namespace stmt failed", K(ret));
+    }
+  }
   return ret;
 }