Yuan Tian created IOTDB-1322:
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Summary: Filter RowRecord automatically if all columns in it are
null
Key: IOTDB-1322
URL: https://issues.apache.org/jira/browse/IOTDB-1322
Project: Apache IoTDB
Issue Type: New Feature
Components: Core/Engine
Reporter: Yuan Tian
Currently, in group by query, we will fill null for any group by interval if
the columns don't have values in that group by interval.
However, if all columns in that group by interval are null, maybe users don't
need that RowRecord, so we want IoTDB to support this feature.
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