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Fixed bug mdev-9028.

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This patch is actually a complement for the fix of bug mdev-6892.
The procedure create_tmp_table() now must take into account
Item_direct_refs that wrap up constant fields of derived tables/views
that are used as inner tables in outer join operations.
This commit is contained in:
Igor Babaev
2017-02-16 23:44:54 -08:00
parent b70cd26d73
commit f49375fddf
3 changed files with 49 additions and 1 deletions
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4
sql/sql_select.cc
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@ -14627,7 +14627,9 @@ static Field *create_tmp_field_from_item(THD *thd, Item *item, TABLE *table,
if (new_field)
new_field->init(table);
if (copy_func && item->real_item()->is_result_field())
if (copy_func &&
(item->is_result_field() ||
(item->real_item()->is_result_field())))
*((*copy_func)++) = item; // Save for copy_funcs
if (modify_item)
item->set_result_field(new_field);