test-partition-prune 1 1 1 1 1 test-join 1 1 alias2alias 1 1 1 1 1 1 1 array-join 1 0 0 lambda 1 optimize_read_in_order Expression (Projection) Limit (preliminary LIMIT) MergingSorted (Merge sorted streams for ORDER BY) MergeSorting (Merge sorted blocks for ORDER BY) PartialSorting (Sort each block for ORDER BY) Expression ((Before ORDER BY + Add table aliases)) SettingQuotaAndLimits (Set limits and quota after reading from storage) ReadFromStorage (MergeTree) Expression (Projection) Limit (preliminary LIMIT) FinishSorting Expression ((Before ORDER BY + Add table aliases)) SettingQuotaAndLimits (Set limits and quota after reading from storage) Union ReadFromStorage (MergeTree with order) ReadFromStorage (MergeTree with order) ReadFromStorage (MergeTree with order) Expression (Projection) Limit (preliminary LIMIT) FinishSorting Expression (Before ORDER BY) SettingQuotaAndLimits (Set limits and quota after reading from storage) Union ReadFromStorage (MergeTree with order) ReadFromStorage (MergeTree with order) ReadFromStorage (MergeTree with order) optimize_aggregation_in_order Expression ((Projection + Before ORDER BY)) Aggregating Expression ((Before GROUP BY + Add table aliases)) SettingQuotaAndLimits (Set limits and quota after reading from storage) ReadFromStorage (MergeTree) Expression ((Projection + Before ORDER BY)) Aggregating Expression ((Before GROUP BY + Add table aliases)) SettingQuotaAndLimits (Set limits and quota after reading from storage) Union ReadFromStorage (MergeTree with order) ReadFromStorage (MergeTree with order) ReadFromStorage (MergeTree with order) Expression ((Projection + Before ORDER BY)) Aggregating Expression (Before GROUP BY) SettingQuotaAndLimits (Set limits and quota after reading from storage) Union ReadFromStorage (MergeTree with order) ReadFromStorage (MergeTree with order) ReadFromStorage (MergeTree with order) second-index 1 1