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add test for aggregation by primary key and many parts

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This commit is contained in:
Anton Popov 2021-04-02 00:32:09 +03:00
parent 88cd775f6a
commit 6aecaea664
2 changed files with 27 additions and 0 deletions
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tests/queries/0_stateless/01786_group_by_pk_many_streams.reference Normal file
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tests/queries/0_stateless/01786_group_by_pk_many_streams.sql Normal file
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DROP TABLE IF EXISTS group_by_pk;
CREATE TABLE group_by_pk (k UInt64, v UInt64)
ENGINE = MergeTree ORDER BY k PARTITION BY v % 50;
INSERT INTO group_by_pk SELECT number / 100, number FROM numbers(1000);
SELECT sum(v) AS s FROM group_by_pk GROUP BY k ORDER BY s DESC LIMIT 5
SETTINGS optimize_aggregation_in_order = 1, max_block_size = 1;
SELECT '=======';
SELECT sum(v) AS s FROM group_by_pk GROUP BY k ORDER BY s DESC LIMIT 5
SETTINGS optimize_aggregation_in_order = 0, max_block_size = 1;
DROP TABLE IF EXISTS group_by_pk;