Implement distinct in AggFunction#14623
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JackieTien97 merged 11 commits intoapache:masterfrom Jan 17, 2025
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Wei-hao-Li
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Jan 3, 2025
Wei-hao-Li
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- Support all agg-functions include UDAF.
- This PR only contains the basic implement, the optimizers will be supported in next PR.
JackieTien97
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Jan 6, 2025
...e/iotdb/db/queryengine/execution/operator/source/relational/aggregation/AggregationMask.java
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...otdb/db/queryengine/execution/operator/source/relational/aggregation/AccumulatorFactory.java
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...e/iotdb/db/queryengine/execution/operator/source/relational/aggregation/AggregationMask.java
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...db/db/queryengine/execution/operator/source/relational/aggregation/MaskedRecordIterator.java
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iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/udf/access/RecordIterator.java
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Signed-off-by: Weihao Li <18110526956@163.com>
Signed-off-by: Weihao Li <18110526956@163.com>
Contributor
|
I noticed that In Trino there's a MarkDistinctOperator, does it have something to do with Distinct Function? |
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Author
Yes, it is another implement of AggFunc-distinct, it will be introduced to our code in next optimizer PR (You can see design doc of this feature to see more details). |
Contributor
OK👍 |
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