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https://issues.apache.org/jira/browse/IOTDB-828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17184934#comment-17184934
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Jialin Qiao commented on IOTDB-828:
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Previous, linear could all be added, we could do previous fill first. Yes,
fill every null.
This issue is not urgent. We could do others first.
If someone has this requirement, please leave a comment.
> Support Fill in raw data query
> ------------------------------
>
> Key: IOTDB-828
> URL: https://issues.apache.org/jira/browse/IOTDB-828
> Project: Apache IoTDB
> Issue Type: New Feature
> Components: Core/Engine
> Reporter: Jialin Qiao
> Priority: Major
>
> In some cases, the collected data belongs to different manufacturing batch,
> the manufacturing batch is stored as a field and only inserted when it
> changes.
>
> When querying multiple series with the batch, some null will occurs. The
> following case contains two batch data.
>
> time, s1, batch
> 1, 1, 1
> 2, 2, null
> 3, 3, null
> 4, 4, 2
> 5, 5, null
> 6, 6, null
> In this case, we could support filling the null after aligning by time.
>
> time, s1, batch
> 1, 1, 1
> 2, 2, 1
> 3, 3, 1
> 4, 4, 2
> 5, 5, 2
> 6, 6, 2
>
> The related sql: select s1, batch from xxx fill()
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