mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-15 12:14:18 +00:00
12 lines
454 B
SQL
12 lines
454 B
SQL
DROP TABLE IF EXISTS topk;
|
|
|
|
CREATE TABLE topk (val1 String, val2 UInt32) ENGINE = MergeTree ORDER BY val1;
|
|
|
|
INSERT INTO topk WITH number % 7 = 0 AS frequent SELECT toString(frequent ? number % 10 : number), frequent ? 999999999 : number FROM numbers(4000000);
|
|
|
|
SELECT arraySort(topK(10)(val1)) FROM topk;
|
|
SELECT arraySort(topKWeighted(10)(val1, val2)) FROM topk;
|
|
SELECT topKWeighted(10)(toString(number), number) from numbers(3000000);
|
|
|
|
DROP TABLE topk;
|