ClickHouse/tests/queries/0_stateless/01951_distributed_push_down_limit.reference
2021-10-19 11:11:54 +03:00

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-- { echo }
explain select * from remote('127.{1,2}', view(select * from numbers(1e6))) order by number limit 10 settings distributed_push_down_limit=0;
Expression (Projection)
Limit (preliminary LIMIT (without OFFSET))
Sorting (Merge sorted streams after aggregation stage for ORDER BY)
SettingQuotaAndLimits (Set limits and quota after reading from storage)
Union
Sorting (Sorting for ORDER BY)
Expression (Before ORDER BY)
SettingQuotaAndLimits (Set limits and quota after reading from storage)
Expression ((Convert VIEW subquery result to VIEW table structure + (Materialize constants after VIEW subquery + (Projection + Before ORDER BY))))
SettingQuotaAndLimits (Set limits and quota after reading from storage)
ReadFromStorage (SystemNumbers)
ReadFromRemote (Read from remote replica)
explain select * from remote('127.{1,2}', view(select * from numbers(1e6))) order by number limit 10 settings distributed_push_down_limit=1;
Expression (Projection)
Limit (preliminary LIMIT (without OFFSET))
Sorting (Merge sorted streams after aggregation stage for ORDER BY)
SettingQuotaAndLimits (Set limits and quota after reading from storage)
Union
Limit (preliminary LIMIT (with OFFSET))
Sorting (Sorting for ORDER BY)
Expression (Before ORDER BY)
SettingQuotaAndLimits (Set limits and quota after reading from storage)
Expression ((Convert VIEW subquery result to VIEW table structure + (Materialize constants after VIEW subquery + (Projection + Before ORDER BY))))
SettingQuotaAndLimits (Set limits and quota after reading from storage)
ReadFromStorage (SystemNumbers)
ReadFromRemote (Read from remote replica)