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From "Alexander Shoshin (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (FLINK-4541) Support for SQL NOT IN operator
Date Fri, 21 Oct 2016 15:32:58 GMT

     [ https://issues.apache.org/jira/browse/FLINK-4541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alexander Shoshin reassigned FLINK-4541:
----------------------------------------

    Assignee: Alexander Shoshin

> Support for SQL NOT IN operator
> -------------------------------
>
>                 Key: FLINK-4541
>                 URL: https://issues.apache.org/jira/browse/FLINK-4541
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Timo Walther
>            Assignee: Alexander Shoshin
>
> This should work:
> {code}
> def main(args: Array[String]): Unit = {
>     // set up execution environment
>     val env = ExecutionEnvironment.getExecutionEnvironment
>     val tEnv = TableEnvironment.getTableEnvironment(env)
>     val input = env.fromElements(WC("hello", 1), WC("hello", 1), WC("ciao", 1))
>     // register the DataSet as table "WordCount"
>     tEnv.registerDataSet("WordCount", input, 'word, 'frequency)
>     tEnv.registerTable("WordCount2", tEnv.fromDataSet(input, 'word, 'frequency).select('word).filter('word
!== "hello"))
>     // run a SQL query on the Table and retrieve the result as a new Table
>     val table = tEnv.sql("SELECT word, SUM(frequency) FROM WordCount WHERE word NOT IN
(SELECT word FROM WordCount2) GROUP BY word")
>     table.toDataSet[WC].print()
>   }
> {code}



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