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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-10145) Add replace supported in TableAPI and SQL
Date Tue, 21 Aug 2018 04:36:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-10145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16586920#comment-16586920

ASF GitHub Bot commented on FLINK-10145:

Guibo-Pan commented on a change in pull request #6576: [FLINK-10145][table] Add replace supported
in TableAPI and SQL
URL: https://github.com/apache/flink/pull/6576#discussion_r211475986

 File path: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/sql/ScalarSqlFunctions.scala
 @@ -67,6 +67,14 @@ object ScalarSqlFunctions {
+  val REPLACE = new SqlFunction(
 Review comment:
   I use SqlStdOperatorTable.REPLACE at first, however that REPLACE function can not handle
null params, so I create a new function which refer to SqlStdOperatorTable.REPLACE.

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> Add replace supported in TableAPI and SQL
> -----------------------------------------
>                 Key: FLINK-10145
>                 URL: https://issues.apache.org/jira/browse/FLINK-10145
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API &amp; SQL
>            Reporter: Guibo Pan
>            Assignee: Guibo Pan
>            Priority: Major
>              Labels: pull-request-available
> replace is an useful function for String. 
> for example:
> {code:java}
> select replace("Hello World", "World", "Flink") // return "Hello Flink"
> select replace("ababab", "abab", "z") // return "zab"
> {code}
> It is supported as a UDF in Hive, more details please see[1]
> [1]: https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-StringFunctions

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