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Posted to notifications@iotdb.apache.org by "Steve Yurong Su (Jira)" <ji...@apache.org> on 2021/11/01 06:53:00 UTC

[jira] [Created] (IOTDB-1906) Support Nested Expressions in Aggregation Queries

Steve Yurong Su created IOTDB-1906:
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             Summary: Support Nested Expressions in Aggregation Queries
                 Key: IOTDB-1906
                 URL: https://issues.apache.org/jira/browse/IOTDB-1906
             Project: Apache IoTDB
          Issue Type: New Feature
            Reporter: Steve Yurong Su
            Assignee: liaolanyu
             Fix For: master branch


Support nested expressions of arithmetic expressions, bracket expressions, constants, and aggregate queries.

Examples:

selete first_value(temperature) - last_value(temperature) from root.iot.boiler

selete 31.4-(22 + first_value(temperature))% 2 - last_value(temperature) from root.iot.boiler



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