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16075ada67
* feat: impl optimizer rule to handle last_value case Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * rename file Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * update sqlness result Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * Update src/query/src/optimizer/scan_hint.rs Co-authored-by: Jeremyhi <jiachun_feng@proton.me> * split methods Signed-off-by: Ruihang Xia <waynestxia@gmail.com> --------- Signed-off-by: Ruihang Xia <waynestxia@gmail.com> Co-authored-by: Jeremyhi <jiachun_feng@proton.me>
29 lines
605 B
SQL
29 lines
605 B
SQL
create table t (
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ts timestamp time index,
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host string primary key,
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not_pk string,
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val double,
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);
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insert into t values
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(0, 'a', '🌕', 1.0),
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(1, 'b', '🌖', 2.0),
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(2, 'a', '🌗', 3.0),
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(3, 'c', '🌘', 4.0),
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(4, 'a', '🌑', 5.0),
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(5, 'b', '🌒', 6.0),
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(6, 'a', '🌓', 7.0),
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(7, 'c', '🌔', 8.0),
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(8, 'd', '🌕', 9.0);
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-- Wait for #4354
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-- explain analyze
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-- select
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-- last_value(host order by ts),
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-- last_value(not_pk order by ts),
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-- last_value(val order by ts)
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-- from t
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-- group by host;
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drop table t;
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