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Posted to notifications@iotdb.apache.org by "Alima777 (Jira)" <ji...@apache.org> on 2021/07/22 15:04:00 UTC

[jira] [Created] (IOTDB-1522) Optimize the construction process of the query result set header

Alima777 created IOTDB-1522:
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             Summary: Optimize the construction process of the query result set header
                 Key: IOTDB-1522
                 URL: https://issues.apache.org/jira/browse/IOTDB-1522
             Project: Apache IoTDB
          Issue Type: Improvement
            Reporter: Alima777


At present, the header construction logic of the query result set is chaotic. For example, ordinary query, aggregate query with level, align by device query and last query all have their own processing logic. In addition, some result set headers need to be constructed before the result set is initialized. Some choose to construct after the result set because the initialization of the result set will affect the header elements (column name and column data type). The structure is confusing and poor maintainability., changing a sequence of code will lead to errors.
We hope to adopt a unified calling interface on the upper layer for the headers constructed.



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