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https://issues.apache.org/jira/browse/FLINK-3139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Hueske resolved FLINK-3139.
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Resolution: Fixed
Fix Version/s: 1.1.0
Support for null values was added during the redesign of the Table API.
> NULL values handling in Table API
> ---------------------------------
>
> Key: FLINK-3139
> URL: https://issues.apache.org/jira/browse/FLINK-3139
> Project: Flink
> Issue Type: Task
> Components: Table API
> Reporter: Chengxiang Li
> Fix For: 1.1.0
>
>
> This is an umbrella task for NULL value handling in Table API.
> As the logical API for queries, Table API should support handling NULL
> values, NULL value is quite a common case during logical query, for example:
> # Data source may miss column value in many cases("value missing", "value
> unknown", "value not applicable" .etc ).
> # Some operators generate Null values on their own, like Outer
> Join/Cube/Rollup/Grouping Set, and so on. Null values handling in Table API
> is the prerequisite of these features.
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