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-rw-r--r--sql/table.cc24
1 files changed, 21 insertions, 3 deletions
diff --git a/sql/table.cc b/sql/table.cc
index fa5fff365d7..dc8ab3c6b42 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -4043,7 +4043,21 @@ bool TABLE_LIST::create_field_translation(THD *thd)
Query_arena *arena= thd->stmt_arena, backup;
bool res= FALSE;
- used_items.empty();
+ if (thd->stmt_arena->is_conventional() ||
+ thd->stmt_arena->is_stmt_prepare_or_first_sp_execute())
+ {
+ /* initialize lists */
+ used_items.empty();
+ persistent_used_items.empty();
+ }
+ else
+ {
+ /*
+ Copy the list created by natural join procedure because the procedure
+ will not be repeated.
+ */
+ used_items= persistent_used_items;
+ }
if (field_translation)
{
@@ -5107,7 +5121,7 @@ Item *create_view_field(THD *thd, TABLE_LIST *view, Item **field_ref,
if (view->table && view->table->maybe_null)
item->maybe_null= TRUE;
/* Save item in case we will need to fall back to materialization. */
- view->used_items.push_back(item);
+ view->used_items.push_front(item);
DBUG_RETURN(item);
}
@@ -6678,7 +6692,11 @@ bool TABLE_LIST::change_refs_to_fields()
if (!materialized_items[idx])
return TRUE;
}
- ref->ref= materialized_items + idx;
+ /*
+ We need to restore the pointers after the execution of the
+ prepared statement.
+ */
+ thd->change_item_tree((Item **)&ref->ref, (Item*)materialized_items + idx);
}
return FALSE;