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Posted to dev@flink.apache.org by "Feng Jin (Jira)" <ji...@apache.org> on 2023/09/11 12:18:00 UTC

[jira] [Created] (FLINK-33070) Add doc for 'unnest'

Feng Jin created FLINK-33070:
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             Summary: Add doc for 'unnest' 
                 Key: FLINK-33070
                 URL: https://issues.apache.org/jira/browse/FLINK-33070
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / Runtime
            Reporter: Feng Jin


Row and column transformation is a commonly used approach. In Flink SQL, we can use unnest for this purpose.

However, the usage and support of unnest are not explained in the documentation.

 

 I think we can at least add it to the built-in functions section (https://nightlies.apache.org/flink/flink-docs-master/docs/dev/table/functions/systemfunctions/#scalar-functions) ， or we provide some examples. 

 



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