[Feat](nereids) add transform rule SimplifyWindowExpression #33647
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Thank you for your contribution to Apache Doris. Since 2024-03-18, the Document has been moved to doris-website. |
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run buildall |
TPC-H: Total hot run time: 38228 ms |
TPC-DS: Total hot run time: 184160 ms |
ClickBench: Total hot run time: 30.26 s |
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Load test result on machine: 'aliyun_ecs.c7a.8xlarge_32C64G' |
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TPC-H: Total hot run time: 38584 ms |
TPC-DS: Total hot run time: 183515 ms |
ClickBench: Total hot run time: 30.08 s |
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Load test result on machine: 'aliyun_ecs.c7a.8xlarge_32C64G' |
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TPC-H: Total hot run time: 38228 ms |
TPC-DS: Total hot run time: 182733 ms |
ClickBench: Total hot run time: 30.57 s |
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Load test result on machine: 'aliyun_ecs.c7a.8xlarge_32C64G' |
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run external |
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run external regression |
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run external |
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run external regression |
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TPC-H: Total hot run time: 38581 ms |
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morrySnow
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Apr 17, 2024
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| * select max(c1) over(partition by pk) from t1; | ||
| * -> select c1 from t1; | ||
| * */ | ||
| public class SimplifyWindowExpression extends OneRewriteRuleFactory { |
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add annotation @DependsRules for denpends on normalize window
| Alias alias = (Alias) expr; | ||
| WindowExpression windowExpression = (WindowExpression) alias.child(); | ||
| if (!windowExpression.getOrderKeys().isEmpty()) { | ||
| remainWindowExpression.add(expr); |
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if partition key is unique, order key is not use anymore, so why remain them?
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LogicalWindow
->
LogicalProject(projections)
+ LogicalWindow(remainWindowExpression)
remainWindowExpressions are the WindowExpressions that don't meet the conditions for optimization, and still need to be evaluated int LogicalWindow.
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Tthe restriction has been removed
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| return new LogicalProject(projections, window.withExpression(remainWindow, | ||
| window.child(0))); |
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do u have case to test this branch? i think this is not right because project should contain remain window node's output
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The problem has been modified and regression cases have been added
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TPC-H: Total hot run time: 38169 ms |
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starocean999
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Apr 19, 2024
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PR approved by at least one committer and no changes requested. |
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PR approved by anyone and no changes requested. |
924060929
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Apr 19, 2024
yiguolei
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Apr 24, 2024
rewrite func(para) over (partition by unique_keys) 1. func() is count(non-null) or rank/dense_rank/row_number -> 1 2. func(para) is min/max/sum/avg/first_value/last_value -> para e.g select max(c1) over(partition by pk) from t1; -> select c1 from t1;
yiguolei
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Apr 24, 2024
rewrite func(para) over (partition by unique_keys) 1. func() is count(non-null) or rank/dense_rank/row_number -> 1 2. func(para) is min/max/sum/avg/first_value/last_value -> para e.g select max(c1) over(partition by pk) from t1; -> select c1 from t1;
yiguolei
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Apr 25, 2024
rewrite func(para) over (partition by unique_keys) 1. func() is count(non-null) or rank/dense_rank/row_number -> 1 2. func(para) is min/max/sum/avg/first_value/last_value -> para e.g select max(c1) over(partition by pk) from t1; -> select c1 from t1;
morningman
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Jul 9, 2024
…pache#37061) intro by apache#33647 after window expression rewritten by literal. literal's data type should same with original window expression.
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rewrite func(para) over (partition by unique_keys)
e.g
select max(c1) over(partition by pk) from t1;
-> select c1 from t1;