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-rw-r--r--sql/opt_sum.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/opt_sum.cc b/sql/opt_sum.cc
index e7bf4658d5c..9bc21ab3ac3 100644
--- a/sql/opt_sum.cc
+++ b/sql/opt_sum.cc
@@ -461,7 +461,7 @@ int opt_sum_query(THD *thd,
{
if (recalc_const_item)
item->update_used_tables();
- if (!item->const_item())
+ if (!item->const_item() && item->type() != Item::WINDOW_FUNC_ITEM)
const_result= 0;
}
}