[CP] not to print plain text of query sql which contains sensitive data

src/share/ob_rpc_struct.cpp

@@ -84,6 +84,20 @@ int ObDDLArg::assign(const ObDDLArg &other)
   return ret;
 }
 
+DEF_TO_STRING(ObDDLArg)
+{
+  int64_t pos = 0;
+  J_KV("ddl_stmt_str", contain_sensitive_data() ? ObString(OB_MASKED_STR) : ddl_stmt_str_,
+       K_(exec_tenant_id),
+       K_(ddl_id_str),
+       K_(sync_from_primary),
+       K_(based_schema_object_infos),
+       K_(parallelism),
+       K_(task_id),
+       K_(consumer_group_id));
+  return pos;
+}
+
 DEF_TO_STRING(ObGetRootserverRoleResult)
 {
   int64_t pos = 0;