mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-14 10:22:10 +00:00
15 lines
629 B
MySQL
15 lines
629 B
MySQL
|
DROP TABLE IF EXISTS t_sparse_intersect;
|
||
|
|
|
||
|
|
CREATE TABLE t_sparse_intersect (a UInt64, c Int64) ENGINE = MergeTree
|
||
|
|
ORDER BY tuple() SETTINGS ratio_of_defaults_for_sparse_serialization = 0.8;
|
||
|
|
|
||
|
|
SYSTEM STOP MERGES t_sparse_intersect;
|
||
|
|
|
||
|
|
INSERT INTO t_sparse_intersect SELECT if (number % 10 = 0, number, 0), number FROM numbers(1000);
|
||
|
|
INSERT INTO t_sparse_intersect SELECT number, number FROM numbers(1000);
|
||
|
|
|
||
|
|
SELECT count() FROM (SELECT * FROM t_sparse_intersect EXCEPT SELECT * FROM t_sparse_intersect);
|
||
|
|
SELECT count() FROM (SELECT * FROM t_sparse_intersect INTERSECT SELECT * FROM t_sparse_intersect);
|
||
|
|
|
||
|
|
DROP TABLE t_sparse_intersect;
|