From c9ff439e5cffd8ec18821cef12082f07d13c2148 Mon Sep 17 00:00:00 2001
From: seuwebber <webber_code@163.com>
Date: Tue, 26 Sep 2023 02:40:01 +0000
Subject: [PATCH] [CP] [to #52087818]fix PL dblink bug

---
 src/pl/ob_pl_resolver.cpp                | 10 +++++++---
 src/sql/engine/expr/ob_expr_multiset.cpp |  2 +-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/pl/ob_pl_resolver.cpp b/src/pl/ob_pl_resolver.cpp
index 158f8a343..263c34e97 100644
--- a/src/pl/ob_pl_resolver.cpp
+++ b/src/pl/ob_pl_resolver.cpp
@@ -11433,10 +11433,14 @@ int ObPLResolver::resolve_qualified_name(ObQualifiedName &q_name,
   int ret = OB_SUCCESS;
 
   SET_LOG_CHECK_MODE();
-
+  if (!q_name.dblink_name_.empty()) {
+    ret = OB_NOT_SUPPORTED;
+    LOG_WARN("dblink sequence and udf not support in PL", K(ret), K(q_name));
+    LOG_USER_ERROR(OB_NOT_SUPPORTED, "dblink sequence and udf in PL");
+  }
   OZ (replace_udf_param_expr(q_name, columns, real_exprs));
-
-  if (q_name.is_sys_func()) {
+  if (OB_FAIL(ret)) {
+  } else if (q_name.is_sys_func()) {
     if (OB_FAIL(q_name.access_idents_.at(0).sys_func_expr_->check_param_num())) {
       LOG_WARN("sys func param number not match", K(ret));
     } else {
diff --git a/src/sql/engine/expr/ob_expr_multiset.cpp b/src/sql/engine/expr/ob_expr_multiset.cpp
index 62e948b23..20ebbe1cd 100644
--- a/src/sql/engine/expr/ob_expr_multiset.cpp
+++ b/src/sql/engine/expr/ob_expr_multiset.cpp
@@ -580,7 +580,7 @@ int ObExprMultiSet::eval_multiset(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &r
         coll->set_type(c1->get_type());
         coll->set_id(c1->get_id());
         coll->set_is_null(c1->is_null());
-        coll->set_element_type(c1->get_element_type());
+        coll->set_element_desc(c1->get_element_desc());
         coll->set_column_count(c1->get_column_count());
         coll->set_not_null(c1->is_not_null());
         coll->set_count(elem_count);