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https://issues.apache.org/jira/browse/FLINK-9990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16643249#comment-16643249
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ASF GitHub Bot commented on FLINK-9990:
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xccui commented on issue #6448: [FLINK-9990] [table] Add regexp_extract
supported in TableAPI and SQL
URL: https://github.com/apache/flink/pull/6448#issuecomment-428171717
Thanks for the update @yanghua, I'll merge this.
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> Add regexp_extract supported in TableAPI and SQL
> ------------------------------------------------
>
> Key: FLINK-9990
> URL: https://issues.apache.org/jira/browse/FLINK-9990
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: vinoyang
> Assignee: vinoyang
> Priority: Minor
> Labels: pull-request-available
>
> regex_extract is a very useful function, it returns a string based on a regex
> pattern and a index.
> For example :
> {code:java}
> regexp_extract('foothebar', 'foo(.*?)(bar)', 2) // returns 'bar.'
> {code}
> It is provided as a UDF in Hive, more details please see[1].
> [1]: https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF
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