mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-03 13:02:00 +00:00
152 lines
3.8 KiB
Plaintext
152 lines
3.8 KiB
Plaintext
-- { echo }
|
|
select x3, x2, x1 from test order by 1;
|
|
1 100 100
|
|
10 1 10
|
|
100 10 1
|
|
select x3, x2, x1 from test order by x3;
|
|
1 100 100
|
|
10 1 10
|
|
100 10 1
|
|
select x3, x2, x1 from test order by 1 desc;
|
|
100 10 1
|
|
10 1 10
|
|
1 100 100
|
|
select x3, x2, x1 from test order by x3 desc;
|
|
100 10 1
|
|
10 1 10
|
|
1 100 100
|
|
insert into test values (1, 10, 100), (10, 1, 10), (100, 100, 1);
|
|
select x3, x2 from test group by x3, x2 order by x3;
|
|
1 100
|
|
10 1
|
|
100 10
|
|
select x3, x2 from test group by 1, 2 order by x3;
|
|
1 100
|
|
10 1
|
|
100 10
|
|
select x1, x2, x3 from test order by x3 limit 1 by x3;
|
|
100 100 1
|
|
10 1 10
|
|
1 10 100
|
|
select x1, x2, x3 from test order by 3 limit 1 by 3;
|
|
100 100 1
|
|
10 1 10
|
|
1 10 100
|
|
select x1, x2, x3 from test order by x3 limit 1 by x1;
|
|
100 100 1
|
|
10 1 10
|
|
1 10 100
|
|
select x1, x2, x3 from test order by 3 limit 1 by 1;
|
|
100 100 1
|
|
10 1 10
|
|
1 10 100
|
|
explain syntax select x3, x2, x1 from test order by 1;
|
|
SELECT
|
|
x3,
|
|
x2,
|
|
x1
|
|
FROM test
|
|
ORDER BY x3 ASC
|
|
explain syntax select x3 + 1, x2, x1 from test order by 1;
|
|
SELECT
|
|
x3 + 1,
|
|
x2,
|
|
x1
|
|
FROM test
|
|
ORDER BY x3 + 1 ASC
|
|
explain syntax select x3, x3 - x2, x2, x1 from test order by 2;
|
|
SELECT
|
|
x3,
|
|
x3 - x2,
|
|
x2,
|
|
x1
|
|
FROM test
|
|
ORDER BY x3 - x2 ASC
|
|
explain syntax select x3, if(x3 > 10, x3, plus(x1, x2)), x1 + x2 from test order by 2;
|
|
SELECT
|
|
x3,
|
|
if(x3 > 10, x3, x1 + x2),
|
|
x1 + x2
|
|
FROM test
|
|
ORDER BY if(x3 > 10, x3, x1 + x2) ASC
|
|
explain syntax select max(x1), x2 from test group by 2 order by 1, 2;
|
|
SELECT
|
|
max(x1),
|
|
x2
|
|
FROM test
|
|
GROUP BY x2
|
|
ORDER BY
|
|
max(x1) ASC,
|
|
x2 ASC
|
|
explain syntax select 1 + greatest(x1, 1), x2 from test group by 1, 2;
|
|
SELECT
|
|
1 + greatest(x1, 1),
|
|
x2
|
|
FROM test
|
|
GROUP BY
|
|
1 + greatest(x1, 1),
|
|
x2
|
|
select max(x1), x2 from test group by 1, 2; -- { serverError 43 }
|
|
select 1 + max(x1), x2 from test group by 1, 2; -- { serverError 43 }
|
|
explain syntax select x1 + x3, x3 from test group by 1, 2;
|
|
SELECT
|
|
x1 + x3,
|
|
x3
|
|
FROM test
|
|
GROUP BY
|
|
x1 + x3,
|
|
x3
|
|
create table test2(x1 Int, x2 Int, x3 Int) engine=Memory;
|
|
insert into test2 values (1, 10, 100), (10, 1, 10), (100, 100, 1);
|
|
select x1, x1 * 2, max(x2), max(x3) from test2 group by 2, 1, x1 order by 1, 2, 4 desc, 3 asc;
|
|
1 2 10 100
|
|
10 20 1 10
|
|
100 200 100 1
|
|
select a, b, c, d, e, f from (select 44 a, 88 b, 13 c, 14 d, 15 e, 16 f) t group by 1,2,3,4,5,6 order by a;
|
|
44 88 13 14 15 16
|
|
explain syntax select plus(1, 1) as a group by a;
|
|
SELECT 1 + 1 AS a
|
|
GROUP BY a
|
|
select substr('aaaaaaaaaaaaaa', 8) as a group by a order by a;
|
|
aaaaaaa
|
|
select substr('aaaaaaaaaaaaaa', 8) as a group by substr('aaaaaaaaaaaaaa', 8) order by a;
|
|
aaaaaaa
|
|
select b from (select 5 as a, 'Hello' as b order by a);
|
|
Hello
|
|
select b from (select 5 as a, 'Hello' as b group by a);
|
|
Hello
|
|
select b from (select 5 as a, 'Hello' as b order by 1);
|
|
Hello
|
|
drop table if exists tp2;
|
|
create table tp2(first_col String, second_col Int32) engine = MergeTree() order by tuple();
|
|
insert into tp2 select 'bbb', 1;
|
|
insert into tp2 select 'aaa', 2;
|
|
select count(*) from (select first_col, count(second_col) from tp2 group by 1);
|
|
2
|
|
select total from (select first_col, count(second_col) as total from tp2 group by 1);
|
|
1
|
|
1
|
|
select first_col from (select first_col, second_col as total from tp2 order by 1 desc);
|
|
bbb
|
|
aaa
|
|
select first_col from (select first_col, second_col as total from tp2 order by 2 desc);
|
|
aaa
|
|
bbb
|
|
select max from (select max(first_col) as max, second_col as total from tp2 group by 2) order by 1;
|
|
aaa
|
|
bbb
|
|
with res as (select first_col from (select first_col, second_col as total from tp2 order by 2 desc) limit 1)
|
|
select * from res;
|
|
aaa
|
|
drop table if exists test;
|
|
create table test
|
|
(
|
|
`id` UInt32,
|
|
`time` UInt32,
|
|
index `id` (`id`) type set(0) granularity 3,
|
|
index `time` (`time`) type minmax granularity 3
|
|
) engine = MergeTree()
|
|
order by (`time`);
|
|
select count(*) as `value`, 0 as `data` from test group by `data`;
|
|
drop table test;
|