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Remove an obsolete comment and an unused variable.
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@@ -230,7 +230,7 @@ class JOIN :public Sql_alloc
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/* Is set if we have a GROUP BY and we have ORDER BY on a constant. */
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bool skip_sort_order;
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bool need_tmp, hidden_group_fields, buffer_result;
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bool need_tmp, hidden_group_fields;
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DYNAMIC_ARRAY keyuse;
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Item::cond_result cond_value;
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List<Item> all_fields; // to store all fields that used in query
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@@ -299,8 +299,6 @@ class JOIN :public Sql_alloc
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skip_sort_order= 0;
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need_tmp= 0;
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hidden_group_fields= 0; /*safety*/
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buffer_result= test(select_options & OPTION_BUFFER_RESULT) &&
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!test(select_options & OPTION_FOUND_ROWS);
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error= 0;
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select= 0;
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return_tab= 0;
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