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-rw-r--r--sql/item_subselect.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc
index 69b819e08f3..99be2024c2f 100644
--- a/sql/item_subselect.cc
+++ b/sql/item_subselect.cc
@@ -3674,7 +3674,7 @@ int subselect_single_select_engine::prepare(THD *thd)
int subselect_union_engine::prepare(THD *thd_arg)
{
set_thd(thd_arg);
- return unit->prepare(thd, result, SELECT_NO_UNLOCK);
+ return unit->prepare(unit->derived, result, SELECT_NO_UNLOCK);
}
int subselect_uniquesubquery_engine::prepare(THD *)