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count function result on random stream is not right #750

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lizhou1111 opened this issue May 31, 2024 · 0 comments
Open

count function result on random stream is not right #750

lizhou1111 opened this issue May 31, 2024 · 0 comments
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@lizhou1111
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lizhou1111 commented May 31, 2024

proton :) select count() from test_r settings max_events=10000

SELECT
  count()
FROM
  test_r
SETTINGS
  max_events = 10000

Query id: 87eb84db-d07b-44ae-a354-cea470f55c02

┌─count()─┐
│    2000 │
└─────────┘
┌─count()─┐
│    4000 │
└─────────┘
┌─count()─┐
│    6000 │
└─────────┘
┌─count()─┐
│    8000 │
└─────────┘

4 rows in set. Elapsed: 10.001 sec. Processed 10.00 thousand rows, 40.00 KB (999.94 rows/s., 4.00 KB/s.)

It actually generate 10000 rows data, but the aggregation result is not right , should end up with 10000?

Another problem: random stream with date32 type seems always 2299-12-31, but the date type is ok

proton :) show create test_r

SHOW CREATE STREAM test_r

Query id: ff26d25f-a835-427d-870d-c0836ab05240

┌─statement────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ CREATE RANDOM STREAM default.test_r
(
  `value1` date32,
  `value2` date,
  `_tp_time` datetime64(3, 'UTC') DEFAULT now64(3, 'UTC') CODEC(DoubleDelta, LZ4),
  INDEX _tp_time_index _tp_time TYPE minmax GRANULARITY 256
) │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘

1 row in set. Elapsed: 0.004 sec. 


proton :) select value1, value2 from test_r settings max_events=20

SELECT
  value1, value2
FROM
  test_r
SETTINGS
  max_events = 20

Query id: bf02a09f-4830-4a86-981f-03e665c5627f

┌─────value1─┬─────value2─┐
│ 2299-12-312069-08-07 │
│ 2299-12-312096-06-21 │
│ 2299-12-312116-10-28 │
│ 2299-12-312063-01-11 │
│ 2299-12-311974-02-26 │
└────────────┴────────────┘
┌─────value1─┬─────value2─┐
│ 2299-12-312034-10-26 │
│ 2299-12-312011-07-22 │
│ 2299-12-312099-04-12 │
│ 2299-12-312036-10-13 │
│ 2299-12-312143-10-17 │
└────────────┴────────────┘
┌─────value1─┬─────value2─┐
│ 2299-12-312057-07-17 │
│ 2299-12-311979-04-21 │
│ 2299-12-312107-12-12 │
│ 2299-12-312128-02-19 │
│ 2299-12-311988-02-14 │
└────────────┴────────────┘
┌─────value1─┬─────value2─┐
│ 2299-12-312046-12-09 │
│ 2299-12-312138-06-11 │
│ 2299-12-312141-03-22 │
│ 2299-12-312117-05-21 │
│ 2299-12-311983-04-23 │
└────────────┴────────────┘

20 rows in set. Elapsed: 0.025 sec. 

@lizhou1111 lizhou1111 added the bug Something isn't working label May 31, 2024
@lizhou1111 lizhou1111 self-assigned this May 31, 2024
@lizhou1111 lizhou1111 changed the title count function result on random is not right count function result on random stream is not right May 31, 2024
@lizhou1111 lizhou1111 added the enhancement New feature or request label May 31, 2024
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