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Dennis Zhuang
d0aa4ecb7b
#9104 landed its own NULL-sample case whose data is the same series this one already used: one host with interior NULLs, one host with nothing but NULLs. Keeping both means two files asserting the same semantics on the same rows. The merged case keeps every query from both, so the presence functions still cover the trailing-NULL window, the count of two, the empty left-open window at t=7, and the all-NULL windows. Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
93 lines
3.1 KiB
SQL
93 lines
3.1 KiB
SQL
-- NULL fields are missing samples, not zero-valued samples.
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CREATE TABLE null_samples (
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ts TIMESTAMP(3) TIME INDEX,
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host STRING PRIMARY KEY,
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val DOUBLE,
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);
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INSERT INTO null_samples VALUES
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(0, 'a', 1.0),
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(1000, 'a', NULL),
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(2000, 'a', NULL),
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(3000, 'a', 4.0),
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(0, 'b', NULL),
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(1000, 'b', NULL),
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(2000, 'b', NULL),
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(3000, 'b', NULL);
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-- At t=2 the trailing NULLs must not hide 1; at t=3 count must be 2.
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-- At t=7 the left-open window is empty. Valid results must disappear.
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-- SQLNESS SORT_RESULT 3 1
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TQL EVAL (2, 7, '1s') count_over_time(null_samples{host="a"}[4s]);
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-- SQLNESS SORT_RESULT 3 1
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TQL EVAL (2, 7, '1s') last_over_time(null_samples{host="a"}[4s]);
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-- SQLNESS SORT_RESULT 3 1
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TQL EVAL (2, 7, '1s') present_over_time(null_samples{host="a"}[4s]);
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-- SQLNESS SORT_RESULT 3 1
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TQL EVAL (2, 7, '1s') absent_over_time(null_samples{host="a"}[4s]);
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-- All-NULL windows have no samples: only absent_over_time returns 1.
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TQL EVAL (3, 3, '1s') count_over_time(null_samples{host="b"}[4s]);
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TQL EVAL (3, 3, '1s') last_over_time(null_samples{host="b"}[4s]);
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TQL EVAL (3, 3, '1s') present_over_time(null_samples{host="b"}[4s]);
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TQL EVAL (3, 3, '1s') absent_over_time(null_samples{host="b"}[4s]);
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-- Every function below sees the same two samples, 1.0 at 0s and 4.0 at 3s.
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TQL EVAL (3, 3, '1s') rate(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') increase(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') delta(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') idelta(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') irate(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') changes(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') resets(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') avg_over_time(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') stddev_over_time(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') stdvar_over_time(null_samples{host="a"}[4s]);
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TQL EVAL (3, 3, '1s') quantile_over_time(0.5, null_samples{host="a"}[4s]);
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-- A window whose only slot is NULL holds no sample, like a window with no row.
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TQL EVAL (1, 1, '1s') rate(null_samples{host="a"}[1s]);
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-- Prometheus returns an empty vector for a range without samples, not NaN.
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TQL EVAL (1, 1, '1s') quantile_over_time(0.5, null_samples{host="a"}[1s]);
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-- `b` never has a sample, so it must not reach the aggregation.
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-- SQLNESS SORT_RESULT 3 1
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TQL EVAL (0, 15, '1s') avg by (host) (rate(null_samples[4s]));
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DROP TABLE null_samples;
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CREATE TABLE multi_field (
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ts TIMESTAMP(3) TIME INDEX,
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host STRING PRIMARY KEY,
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f1 DOUBLE,
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f2 DOUBLE
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);
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INSERT INTO multi_field VALUES
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(0, 'a', 1.0, 10.0),
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(1000, 'a', 2.0, NULL),
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(2000, 'a', 3.0, NULL),
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(3000, 'a', 4.0, 40.0);
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-- f1 has two samples in this window and f2 only one, so f1 keeps its result while f2 is NULL.
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-- Dropping the whole row would take f1's samples with it.
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-- SQLNESS SORT_RESULT 3 1
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TQL EVAL (1, 1, '1s') rate(multi_field[4s]);
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-- A selector emits the same shape: the row stays, the field without a sample is NULL.
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-- SQLNESS SORT_RESULT 3 1
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TQL EVAL (1, 1, '1s') multi_field;
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DROP TABLE multi_field;
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