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dennis zhuang
5fe2a57adb
* fix(promql): default a stepless subquery to a one-minute step
`x[5m:]` evaluated the inner expression at the query step, which is 1s
for instant queries. Prometheus uses the evaluation interval, one minute
by default.
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
* test(promql): cover the default subquery step
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
* test(promql): cover the default subquery step in a range query
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
---------
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
(cherry picked from commit 845fc0af9c)
Signed-off-by: WenyXu <wenymedia@gmail.com>
26 lines
789 B
SQL
26 lines
789 B
SQL
-- A subquery without a step uses the evaluation interval (one minute by
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-- default in Prometheus), not the query step. Expected results are from Prometheus 3.
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create table subquery_default_step (
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ts timestamp time index,
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val double,
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host string primary key
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);
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insert into subquery_default_step values
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(0, 1.0, 'a'),
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(60000, 1.0, 'a'),
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(120000, 1.0, 'a'),
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(180000, 1.0, 'a'),
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(240000, 1.0, 'a'),
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(300000, 1.0, 'a');
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tql eval (300, 300, '1s') count_over_time(subquery_default_step[5m:]);
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tql eval (300, 300, '1s') count_over_time(subquery_default_step[5m:30s]);
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-- The outer range query keeps its own step around the subquery's default step.
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tql eval (300, 360, '15s') count_over_time(subquery_default_step[5m:]);
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drop table subquery_default_step;
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