mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-20 16:50:48 +00:00
10 lines
489 B
SQL
10 lines
489 B
SQL
-- Tags: long
|
|
|
|
SET max_bytes_before_external_group_by = 100000000;
|
|
SET max_memory_usage = 410000000;
|
|
SET group_by_two_level_threshold = 100000;
|
|
SET group_by_two_level_threshold_bytes = 50000000;
|
|
|
|
SELECT sum(k), sum(c) FROM (SELECT number AS k, count() AS c FROM (SELECT * FROM system.numbers LIMIT 10000000) GROUP BY k);
|
|
SELECT sum(k), sum(c), max(u) FROM (SELECT number AS k, count() AS c, uniqArray(range(number % 16)) AS u FROM (SELECT * FROM system.numbers LIMIT 1000000) GROUP BY k);
|