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https://github.com/ClickHouse/ClickHouse.git
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8ed5cfc265
* impl
* fix style
* make executeQueryWithParallelReplicas similar to executeQuery
* impl for parallel replicas
* cleaner code for remote sorting properties
* update test
* fix
* handle when nodes of old versions participate
* small fixes
* temporary enable for testing
* fix after merge
* Revert "temporary enable for testing"
This reverts commit cce7f8884c.
* review fixes
* add bc test
* Update src/Core/Settings.h
142 lines
5.0 KiB
Plaintext
142 lines
5.0 KiB
Plaintext
-- { echoOn } --
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explain pipeline select a from remote(test_cluster_two_shards, currentDatabase(), t) group by a;
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(Expression)
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ExpressionTransform × 4
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(MergingAggregated)
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 2 → 1
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(Union)
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(Aggregating)
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SortingAggregatedForMemoryBoundMergingTransform 4 → 1
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 4 → 1
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AggregatingInOrderTransform × 4
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(Expression)
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ExpressionTransform × 4
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(ReadFromMergeTree)
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MergeTreeInOrder × 4 0 → 1
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(ReadFromRemote)
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select a from remote(test_cluster_two_shards, currentDatabase(), t) group by a order by a limit 5 offset 100500;
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100500
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100501
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100502
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100503
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100504
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explain pipeline select a from remote(test_cluster_two_shards, currentDatabase(), dist_t) group by a;
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(Expression)
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ExpressionTransform × 4
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(MergingAggregated)
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 2 → 1
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(Union)
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(MergingAggregated)
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SortingAggregatedForMemoryBoundMergingTransform 4 → 1
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 2 → 1
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(Union)
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(Aggregating)
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SortingAggregatedForMemoryBoundMergingTransform 4 → 1
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 4 → 1
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AggregatingInOrderTransform × 4
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(Expression)
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ExpressionTransform × 4
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(ReadFromMergeTree)
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MergeTreeInOrder × 4 0 → 1
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(ReadFromRemote)
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(ReadFromRemote)
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select a from remote(test_cluster_two_shards, currentDatabase(), dist_t) group by a order by a limit 5 offset 100500;
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100500
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100501
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100502
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100503
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100504
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1
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-- { echoOn } --
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explain pipeline select a, count() from dist_t_different_dbs group by a order by a limit 5 offset 500;
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(Expression)
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ExpressionTransform
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(Limit)
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Limit
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(Sorting)
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MergingSortedTransform 4 → 1
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MergeSortingTransform × 4
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LimitsCheckingTransform × 4
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PartialSortingTransform × 4
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(Expression)
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ExpressionTransform × 4
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(MergingAggregated)
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 2 → 1
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(Union)
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(Aggregating)
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SortingAggregatedForMemoryBoundMergingTransform 4 → 1
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 4 → 1
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AggregatingInOrderTransform × 4
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(Expression)
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ExpressionTransform × 4
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(ReadFromMergeTree)
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MergeTreeInOrder × 4 0 → 1
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(ReadFromRemote)
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select a, count() from dist_t_different_dbs group by a order by a limit 5 offset 500;
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500 2000
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501 2000
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502 2000
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503 2000
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504 2000
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select a, count() from dist_t_different_dbs group by a, b order by a limit 5 offset 500;
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500 2000
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501 2000
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502 2000
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503 2000
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504 2000
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-- { echoOn } --
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explain pipeline select a from dist_pr_t group by a order by a limit 5 offset 500;
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(Expression)
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ExpressionTransform
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(Limit)
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Limit
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(Sorting)
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MergingSortedTransform 4 → 1
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MergeSortingTransform × 4
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LimitsCheckingTransform × 4
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PartialSortingTransform × 4
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(Expression)
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ExpressionTransform × 4
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(MergingAggregated)
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 3 → 1
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(Union)
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(Aggregating)
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SortingAggregatedForMemoryBoundMergingTransform 4 → 1
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MergingAggregatedBucketTransform × 4
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Resize 1 → 4
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FinishAggregatingInOrderTransform 4 → 1
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AggregatingInOrderTransform × 4
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(Expression)
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ExpressionTransform × 4
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(ReadFromMergeTree)
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MergeTreeInOrder × 4 0 → 1
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(ReadFromRemoteParallelReplicas)
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select a, count() from dist_pr_t group by a order by a limit 5 offset 500;
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500 1000
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501 1000
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502 1000
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503 1000
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504 1000
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select a, count() from dist_pr_t group by a, b order by a limit 5 offset 500;
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500 1000
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501 1000
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502 1000
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503 1000
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504 1000
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