mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-19 06:01:57 +00:00
32 lines
875 B
MySQL
32 lines
875 B
MySQL
|
DROP TABLE IF EXISTS test.test;
|
||
|
|
DROP TABLE IF EXISTS test.mv_bad;
|
||
|
|
DROP TABLE IF EXISTS test.mv_good;
|
||
|
|
DROP TABLE IF EXISTS test.mv_group;
|
||
|
|
|
||
|
|
CREATE TABLE test.test (x String) ENGINE = Null;
|
||
|
|
|
||
|
|
create MATERIALIZED VIEW test.mv_bad (x String)
|
||
|
|
ENGINE = MergeTree Partition by tuple() order by tuple()
|
||
|
|
AS SELECT DISTINCT x FROM test.test;
|
||
|
|
|
||
|
|
create MATERIALIZED VIEW test.mv_good (x String)
|
||
|
|
ENGINE = MergeTree Partition by tuple() order by tuple()
|
||
|
|
AS SELECT x FROM test.test;
|
||
|
|
|
||
|
|
create MATERIALIZED VIEW test.mv_group (x String)
|
||
|
|
ENGINE = MergeTree Partition by tuple() order by tuple()
|
||
|
|
AS SELECT x FROM test.test group by x;
|
||
|
|
|
||
|
|
insert into test.test values ('stest'), ('stest');
|
||
|
|
|
||
|
|
select * from test.mv_bad;
|
||
|
|
SELECT '---';
|
||
|
|
select * from test.mv_good;
|
||
|
|
SELECT '---';
|
||
|
|
select * from test.mv_group;
|
||
|
|
|
||
|
|
DROP TABLE test.mv_bad;
|
||
|
|
DROP TABLE test.mv_good;
|
||
|
|
DROP TABLE test.mv_group;
|
||
|
|
DROP TABLE test.test;
|