diff --git a/storage/tianmu/core/query_compile.cpp b/storage/tianmu/core/query_compile.cpp
index 859df32d7..22c95f251 100644
--- a/storage/tianmu/core/query_compile.cpp
+++ b/storage/tianmu/core/query_compile.cpp
@@ -1137,7 +1137,9 @@ QueryRouteTo Query::Compile(CompiledQuery *compiled_query, SELECT_LEX *selects_l
       List_iterator_fast<Item> li(*fields);
       for (Item *item = li++; item; item = li++) {
         if ((item->type() == Item::Type::FUNC_ITEM) &&
-            (down_cast<Item_func *>(item)->functype() == Item_func::Functype::FUNC_SP) && (!sl->is_distinct())) {
+            ((down_cast<Item_func *>(item)->functype() == Item_func::Functype::FUNC_SP) ||
+             (down_cast<Item_func *>(item)->functype() == Item_func::Functype::SUSERVAR_FUNC)) &&
+            (!sl->is_distinct())) {
           sl->add_active_options(SELECT_DISTINCT);
           sl->join->select_distinct = TRUE;
           use_tmp_when_no_join = true;