diff --git a/src/sql/engine/expr/ob_expr_collection_construct.cpp b/src/sql/engine/expr/ob_expr_collection_construct.cpp
index cf3c310486..9d16f02e71 100644
--- a/src/sql/engine/expr/ob_expr_collection_construct.cpp
+++ b/src/sql/engine/expr/ob_expr_collection_construct.cpp
@@ -119,6 +119,18 @@ int ObExprCollectionConstruct::cg_expr(ObExprCGCtx &op_cg_ctx,
   return ret;
 }
 
+bool ObExprCollectionConstruct::is_match_type(const ObObj &element_obj, pl::ObPLType type)
+{
+  bool is_same = true;
+  if (pl::PL_NESTED_TABLE_TYPE == element_obj.get_meta().get_extend_type() ||
+      pl::PL_VARRAY_TYPE == element_obj.get_meta().get_extend_type()) {
+    is_same = pl::PL_NESTED_TABLE_TYPE == type || pl::PL_VARRAY_TYPE == type;
+  } else {
+    is_same = element_obj.get_meta().get_extend_type() == type;
+  }
+  return is_same;
+}
+
 int ObExprCollectionConstruct::eval_collection_construct(const ObExpr &expr,
                                                          ObEvalCtx &ctx,
                                                          ObDatum &expr_datum)
diff --git a/src/sql/engine/expr/ob_expr_collection_construct.h b/src/sql/engine/expr/ob_expr_collection_construct.h
index 90a54c2f12..438e1e3a34 100644
--- a/src/sql/engine/expr/ob_expr_collection_construct.h
+++ b/src/sql/engine/expr/ob_expr_collection_construct.h
@@ -50,6 +50,7 @@ public:
                       const ObRawExpr &raw_expr, ObExpr &rt_expr) const override;
 
   static int eval_collection_construct(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
+  static bool is_match_type(const ObObj &element_obj, pl::ObPLType type);
 
   struct ExtraInfo : public ObIExprExtraInfo
   {