mirror of
https://github.com/GreptimeTeam/greptimedb.git
synced 2026-01-15 01:32:56 +00:00
73ca39f37e
* define distribution Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * feat: SeqScan support per series distribution * probe distribution Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * reverse sort order Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * more strict check Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * fix clippy Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * change null's ordering Signed-off-by: Ruihang Xia <waynestxia@gmail.com> --------- Signed-off-by: Ruihang Xia <waynestxia@gmail.com> Co-authored-by: evenyag <realevenyag@gmail.com>
379 lines
6.8 KiB
Plaintext
379 lines
6.8 KiB
Plaintext
CREATE TABLE test (a INTEGER, b INTEGER, ts TIMESTAMP TIME INDEX);
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Affected Rows: 0
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INSERT INTO test VALUES (11, 22, 1), (12, 21, 2), (13, 22, 3);
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Affected Rows: 3
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select b from test where a = 12;
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+----+
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| b |
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+----+
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| 21 |
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+----+
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SELECT b FROM test ORDER BY a DESC;
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+----+
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| b |
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+----+
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| 22 |
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| 21 |
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| 22 |
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+----+
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SELECT a, b FROM test ORDER BY a;
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+----+----+
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| a | b |
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+----+----+
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| 11 | 22 |
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| 12 | 21 |
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| 13 | 22 |
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+----+----+
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SELECT a, b FROM test ORDER BY a DESC;
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+----+----+
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| a | b |
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+----+----+
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| 13 | 22 |
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| 12 | 21 |
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| 11 | 22 |
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+----+----+
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SELECT a, b FROM test ORDER BY b, a;
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+----+----+
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| a | b |
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+----+----+
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| 12 | 21 |
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| 11 | 22 |
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| 13 | 22 |
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+----+----+
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SELECT a, b FROM test ORDER BY 2, 1;
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+----+----+
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| a | b |
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+----+----+
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| 12 | 21 |
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| 11 | 22 |
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| 13 | 22 |
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+----+----+
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SELECT a, b FROM test ORDER BY b DESC, a;
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+----+----+
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| a | b |
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+----+----+
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| 11 | 22 |
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| 13 | 22 |
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| 12 | 21 |
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+----+----+
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SELECT a, b FROM test ORDER BY b, a DESC;
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+----+----+
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| a | b |
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+----+----+
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| 12 | 21 |
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| 13 | 22 |
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| 11 | 22 |
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+----+----+
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SELECT a, b FROM test ORDER BY b, a DESC LIMIT 1;
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+----+----+
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| a | b |
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+----+----+
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| 12 | 21 |
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+----+----+
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SELECT a, b FROM test ORDER BY b, a DESC LIMIT 1 OFFSET 1;
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+----+----+
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| a | b |
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+----+----+
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| 13 | 22 |
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+----+----+
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SELECT a, b FROM test ORDER BY b, a DESC OFFSET 1;
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+----+----+
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| a | b |
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+----+----+
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| 13 | 22 |
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| 11 | 22 |
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+----+----+
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SELECT a, b FROM test WHERE a < 13 ORDER BY b;
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+----+----+
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| a | b |
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+----+----+
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| 12 | 21 |
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| 11 | 22 |
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+----+----+
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SELECT a, b FROM test WHERE a < 13 ORDER BY 2;
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+----+----+
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| a | b |
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+----+----+
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| 12 | 21 |
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| 11 | 22 |
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+----+----+
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SELECT a, b FROM test WHERE a < 13 ORDER BY b DESC;
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+----+----+
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| a | b |
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+----+----+
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| 11 | 22 |
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| 12 | 21 |
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+----+----+
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SELECT b, a FROM test WHERE a < 13 ORDER BY b DESC;
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+----+----+
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| b | a |
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+----+----+
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| 22 | 11 |
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| 21 | 12 |
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+----+----+
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SELECT b % 2 AS f, SUM(a) FROM test GROUP BY f ORDER BY b % 2;
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+---+-------------+
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| f | sum(test.a) |
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+---+-------------+
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| 0 | 24 |
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| 1 | 12 |
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+---+-------------+
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SELECT b % 2 AS f, a FROM test ORDER BY b % 2, a;
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+---+----+
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| f | a |
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+---+----+
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| 0 | 11 |
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| 0 | 13 |
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| 1 | 12 |
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+---+----+
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SELECT b % 2 AS f, SUM(a) FROM test GROUP BY f ORDER BY f;
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+---+-------------+
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| f | sum(test.a) |
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+---+-------------+
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| 0 | 24 |
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| 1 | 12 |
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+---+-------------+
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SELECT b % 2 AS f, SUM(a) FROM test GROUP BY f ORDER BY 1;
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+---+-------------+
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| f | sum(test.a) |
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+---+-------------+
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| 0 | 24 |
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| 1 | 12 |
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+---+-------------+
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SELECT a-10 AS k FROM test UNION SELECT a-10 AS l FROM test ORDER BY k;
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+---+
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| k |
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+---+
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| 1 |
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| 2 |
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| 3 |
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+---+
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-- ORDER BY on alias in right-most query
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-- CONTROVERSIAL: SQLite allows both "k" and "l" to be referenced here, Postgres and MonetDB give an error.
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SELECT a-10 AS k FROM test UNION SELECT a-10 AS l FROM test ORDER BY l;
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Error: 3000(PlanQuery), Failed to plan SQL: No field named l. Valid fields are k.
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-- Not compatible with duckdb, work in gretimedb
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SELECT a-10 AS k FROM test UNION SELECT a-10 AS l FROM test ORDER BY 1-k;
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+---+
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| k |
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+---+
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| 3 |
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| 2 |
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| 1 |
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+---+
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-- Not compatible with duckdb, give an error in greptimedb
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SELECT a-10 AS k FROM test UNION SELECT a-10 AS l FROM test ORDER BY a-10;
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Error: 3000(PlanQuery), Failed to plan SQL: Error during planning: For SELECT DISTINCT, ORDER BY expressions a must appear in select list
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-- Not compatible with duckdb, give an error in greptimedb
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SELECT a-10 AS k FROM test UNION SELECT a-11 AS l FROM test ORDER BY a-11;
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Error: 3000(PlanQuery), Failed to plan SQL: Error during planning: For SELECT DISTINCT, ORDER BY expressions a must appear in select list
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DROP TABLE test;
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Affected Rows: 0
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-- ORDER BY for partition table
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CREATE TABLE IF NOT EXISTS `t` (
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`tag` STRING NULL,
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`ts` TIMESTAMP(3) NOT NULL,
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`num` BIGINT NULL,
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TIME INDEX (`ts`),
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PRIMARY KEY (`tag`)
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)
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PARTITION ON COLUMNS (`tag`) (
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tag <= 'z',
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tag > 'z'
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);
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Affected Rows: 0
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INSERT INTO t (tag, ts, num) VALUES
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('abc', 0, 1),
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('abc', 3000, 2),
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('abc', 6000, 3),
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('abc', 9000, 4),
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('abc', 12000, 5),
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('zzz', 3000, 6),
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('zzz', 6000, 7),
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('zzz', 9000, 8),
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('zzz', 0, 9),
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('zzz', 3000, 10);
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Affected Rows: 10
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select * from t where num > 3 order by ts desc limit 2;
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+-----+---------------------+-----+
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| tag | ts | num |
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+-----+---------------------+-----+
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| abc | 1970-01-01T00:00:12 | 5 |
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| abc | 1970-01-01T00:00:09 | 4 |
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+-----+---------------------+-----+
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select tag from t where num > 6 order by ts desc limit 2;
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+-----+
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| tag |
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+-----+
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| zzz |
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| zzz |
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+-----+
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select tag from t where num > 6 order by ts;
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+-----+
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| tag |
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+-----+
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| zzz |
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| zzz |
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| zzz |
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| zzz |
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+-----+
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-- SQLNESS REPLACE (-+) -
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-- SQLNESS REPLACE (\s\s+) _
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-- SQLNESS REPLACE (peers.*) REDACTED
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-- SQLNESS REPLACE (metrics.*) REDACTED
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-- SQLNESS REPLACE region=\d+\(\d+,\s+\d+\) region=REDACTED
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-- SQLNESS REPLACE (RoundRobinBatch.*) REDACTED
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explain analyze select tag from t where num > 6 order by ts desc limit 2;
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+-+-+-+
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| stage | node | plan_|
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+-+-+-+
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| 0_| 0_|_ProjectionExec: expr=[tag@0 as tag] REDACTED
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|_|_|_SortPreservingMergeExec: [ts@1 DESC], fetch=2 REDACTED
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|_|_|_SortExec: TopK(fetch=2), expr=[ts@1 DESC], preserve_partitioning=[true] REDACTED
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|_|_|_MergeScanExec: REDACTED
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|_|_|_|
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| 1_| 0_|_SortPreservingMergeExec: [ts@1 DESC], fetch=2 REDACTED
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|_|_|_WindowedSortExec: expr=ts@1 DESC num_ranges=1 fetch=2 REDACTED
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|_|_|_PartSortExec: expr=ts@1 DESC num_ranges=1 limit=2 REDACTED
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|_|_|_FilterExec: num@2 > 6, projection=[tag@0, ts@1] REDACTED
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|_|_|_SeqScan: region=REDACTED, partition_count=1 (1 memtable ranges, 0 file 0 ranges) REDACTED
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| 1_| 1_|_SortPreservingMergeExec: [ts@1 DESC], fetch=2 REDACTED
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|_|_|_WindowedSortExec: expr=ts@1 DESC num_ranges=1 fetch=2 REDACTED
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|_|_|_PartSortExec: expr=ts@1 DESC num_ranges=1 limit=2 REDACTED
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|_|_|_FilterExec: num@2 > 6, projection=[tag@0, ts@1] REDACTED
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|_|_|_SeqScan: region=REDACTED, partition_count=1 (1 memtable ranges, 0 file 0 ranges) REDACTED
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|_|_| Total rows: 2_|
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+-+-+-+
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drop table t;
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Affected Rows: 0
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-- ORDER BY with projections
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CREATE TABLE test (
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c1 INTEGER,
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c2 INTEGER,
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c3 STRING,
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c4 DOUBLE,
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ts TIMESTAMP TIME INDEX,
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PRIMARY KEY (c1, c3, c2)
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);
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Affected Rows: 0
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INSERT INTO test VALUES (1, NULL, 'a', 3.0, 1), (2, 3, 'b', 4.0, 2), (3, 4, 'c', 5.0, 3);
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Affected Rows: 3
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SELECT c1, c3 FROM test ORDER BY c2;
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+----+----+
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| c1 | c3 |
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+----+----+
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| 2 | b |
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| 3 | c |
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| 1 | a |
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+----+----+
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SELECT c1, c3 FROM test ORDER BY c2 NULLS FIRST;
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+----+----+
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| c1 | c3 |
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+----+----+
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| 1 | a |
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| 2 | b |
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| 3 | c |
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+----+----+
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SELECT c1, c3 FROM test ORDER BY c3, c1;
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+----+----+
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| c1 | c3 |
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+----+----+
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| 1 | a |
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| 2 | b |
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| 3 | c |
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+----+----+
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SELECT c2 FROM test ORDER BY ts;
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+----+
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| c2 |
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+----+
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| 3 |
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| 4 |
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+----+
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drop table test;
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Affected Rows: 0
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