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10.0-base merge
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@ -3410,6 +3410,9 @@ bool calculate_cond_selectivity_for_table(THD *thd, TABLE *table, Item *cond)
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if (table_records == 0)
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DBUG_RETURN(FALSE);
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if (table->pos_in_table_list->schema_table)
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DBUG_RETURN(FALSE);
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if (thd->variables.optimizer_use_condition_selectivity > 2 &&
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!bitmap_is_clear_all(used_fields))
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@ -5360,8 +5363,10 @@ TABLE_READ_PLAN *merge_same_index_scans(PARAM *param, SEL_IMERGE *imerge,
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bzero((*changed_tree)->keys,
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sizeof((*changed_tree)->keys[0])*param->keys);
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(*changed_tree)->keys_map.clear_all();
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key->incr_refs();
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(*tree)->keys[key_idx]->incr_refs();
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if (key)
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key->incr_refs();
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if ((*tree)->keys[key_idx])
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(*tree)->keys[key_idx]->incr_refs();
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if (((*changed_tree)->keys[key_idx]=
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key_or(param, key, (*tree)->keys[key_idx])))
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(*changed_tree)->keys_map.set_bit(key_idx);
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