diff --git a/src/sql/resolver/ddl/ob_alter_table_resolver.cpp b/src/sql/resolver/ddl/ob_alter_table_resolver.cpp
index 5364c88465..12c254c950 100644
--- a/src/sql/resolver/ddl/ob_alter_table_resolver.cpp
+++ b/src/sql/resolver/ddl/ob_alter_table_resolver.cpp
@@ -347,6 +347,11 @@ int ObAlterTableResolver::resolve(const ParseNode &parse_tree)
         LOG_WARN("resolve hints failed", K(ret));
       }
     }
+    if (OB_SUCC(ret)){
+      if (OB_FAIL(deep_copy_string_in_part_expr(get_alter_table_stmt()))) {
+        LOG_WARN("failed to deep copy string in part expr");
+      }
+    }
   }
   DEBUG_SYNC(HANG_BEFORE_RESOLVER_FINISH);
   return ret;
diff --git a/src/sql/resolver/ddl/ob_create_table_resolver.cpp b/src/sql/resolver/ddl/ob_create_table_resolver.cpp
index 486c06d9fb..f836e8aa62 100644
--- a/src/sql/resolver/ddl/ob_create_table_resolver.cpp
+++ b/src/sql/resolver/ddl/ob_create_table_resolver.cpp
@@ -808,6 +808,11 @@ int ObCreateTableResolver::resolve(const ParseNode &parse_tree)
         SQL_RESV_LOG(WARN, "uk and pk is duplicate", K(ret));
       }
     }
+    if (OB_SUCC(ret)){
+      if (OB_FAIL(deep_copy_string_in_part_expr(create_table_stmt))) {
+        LOG_WARN("failed to deep copy string in part expr");
+      }
+    }
   }
   return ret;
 }
diff --git a/src/sql/resolver/ddl/ob_ddl_resolver.cpp b/src/sql/resolver/ddl/ob_ddl_resolver.cpp
index d342a2260d..dbd21aee81 100644
--- a/src/sql/resolver/ddl/ob_ddl_resolver.cpp
+++ b/src/sql/resolver/ddl/ob_ddl_resolver.cpp
@@ -10700,5 +10700,46 @@ int ObDDLResolver::resolve_hints(const ParseNode *node, ObDDLStmt &stmt, const O
   return ret;
 }
 
+int ObDDLResolver::deep_copy_string_in_part_expr(ObPartitionedStmt* stmt)
+{
+  int ret = OB_SUCCESS;
+  ObSEArray<ObRawExpr*, 8> exprs;
+  if (OB_ISNULL(stmt)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("get null stmt");
+  } else if (OB_FAIL(append(exprs, stmt->get_part_fun_exprs()))) {
+    LOG_WARN("failed to append part fun exprs", K(ret));
+  } else if (OB_FAIL(append(exprs, stmt->get_subpart_fun_exprs()))) {
+    LOG_WARN("failed to append subpart fun exprs", K(ret));
+  } else if (exprs.count() > 0 && OB_FAIL(deep_copy_column_expr_name(*allocator_, exprs))) {
+    LOG_WARN("failed to deep copy column expr name");
+  }
+  return ret;
+}
+
+int ObDDLResolver::deep_copy_column_expr_name(common::ObIAllocator &allocator,
+                                              ObIArray<ObRawExpr*> &exprs)
+{
+  int ret = OB_SUCCESS;
+  ObSEArray<ObRawExpr*, 4> column_exprs;
+  if (OB_FAIL(ObRawExprUtils::extract_column_exprs(exprs, column_exprs))) {
+    LOG_WARN("failed to extract column exprs", K(ret));
+  } else {
+    for (int64_t i = 0; OB_SUCC(ret) && i < column_exprs.count(); ++i) {
+      ObColumnRefRawExpr* column_expr = NULL;
+      if (OB_ISNULL(column_exprs.at(i)) || !column_exprs.at(i)->is_column_ref_expr()) {
+        ret = OB_ERR_UNEXPECTED;
+        LOG_WARN("get unexpected expr", K(i), K(column_exprs));
+      } else if (OB_FALSE_IT(column_expr = static_cast<ObColumnRefRawExpr*>(column_exprs.at(i)))) {
+      } else if (OB_FAIL(ob_write_string(allocator, column_expr->get_column_name(), column_expr->get_column_name()))) {
+        LOG_WARN("failed to write string");
+      } else if (OB_FAIL(ob_write_string(allocator, column_expr->get_database_name(), column_expr->get_database_name()))) {
+        LOG_WARN("failed to write string");
+      }
+    }
+  }
+  return ret;
+}
+
 }  // namespace sql
 }  // namespace oceanbase
diff --git a/src/sql/resolver/ddl/ob_ddl_resolver.h b/src/sql/resolver/ddl/ob_ddl_resolver.h
index 99a2b59fb6..32ffa84c66 100644
--- a/src/sql/resolver/ddl/ob_ddl_resolver.h
+++ b/src/sql/resolver/ddl/ob_ddl_resolver.h
@@ -835,6 +835,8 @@ protected:
 
   int check_format_valid(const ObExternalFileFormat &format, bool &is_valid);
 
+  int deep_copy_string_in_part_expr(ObPartitionedStmt* stmt);
+  int deep_copy_column_expr_name(common::ObIAllocator &allocator, ObIArray<ObRawExpr*> &exprs);
   void reset();
   int64_t block_size_;
   int64_t consistency_level_;