mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-19 15:01:03 +00:00
15 lines
764 B
SQL
15 lines
764 B
SQL
DROP TABLE IF EXISTS test.aggregating;
|
|
CREATE TABLE test.aggregating (d Date DEFAULT '2000-01-01', k UInt64, u AggregateFunction(uniq, UInt64)) ENGINE = AggregatingMergeTree(d, k, 8192);
|
|
|
|
INSERT INTO test.aggregating SELECT intDiv(number, 100) AS k, uniqState(toUInt64(number % 100)) AS u FROM (SELECT * FROM system.numbers LIMIT 1000) GROUP BY k;
|
|
INSERT INTO test.aggregating SELECT intDiv(number, 100) AS k, uniqState(toUInt64(number % 100) + 50) AS u FROM (SELECT * FROM system.numbers LIMIT 500, 1000) GROUP BY k;
|
|
|
|
SELECT k, finalizeAggregation(u) FROM test.aggregating FINAL;
|
|
|
|
OPTIMIZE TABLE test.aggregating;
|
|
|
|
SELECT k, finalizeAggregation(u) FROM test.aggregating;
|
|
SELECT k, finalizeAggregation(u) FROM test.aggregating FINAL;
|
|
|
|
DROP TABLE test.aggregating;
|