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Simple optimization: Remove JOIN::set_group_rpa as it is not needed
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@@ -532,7 +532,6 @@ void JOIN::init(THD *thd_arg, List<Item> &fields_arg,
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no_const_tables= FALSE;
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first_select= sub_select;
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set_group_rpa= false;
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group_sent= 0;
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outer_ref_cond= pseudo_bits_cond= NULL;
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@@ -4467,7 +4466,6 @@ JOIN::reinit()
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if (current_ref_ptrs != items0)
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{
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set_items_ref_array(items0);
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set_group_rpa= false;
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}
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/* need to reset ref access state (see join_read_key) */
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@@ -15383,7 +15381,6 @@ void JOIN::cleanup(bool full)
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if (current_ref_ptrs != items0)
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{
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set_items_ref_array(items0);
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set_group_rpa= false;
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}
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DBUG_VOID_RETURN;
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}
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@@ -23647,11 +23644,8 @@ end_send_group(JOIN *join, JOIN_TAB *join_tab, bool end_of_records)
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List<Item> *fields= join_tab ? (join_tab-1)->fields : join->fields;
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DBUG_ENTER("end_send_group");
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if (!join->items3.is_null() && !join->set_group_rpa)
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{
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join->set_group_rpa= true;
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if (!join->items3.is_null() && join->current_ref_ptrs != join->items3)
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join->set_items_ref_array(join->items3);
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}
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if (!join->first_record || end_of_records ||
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(idx=test_if_group_changed(join->group_fields)) >= 0)
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