[
https://issues.apache.org/jira/browse/CALCITE-3395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16956333#comment-16956333
]
Julian Hyde commented on CALCITE-3395:
--------------------------------------
I agree, it would be useful if we had an entry in BuiltInMethod for each
overload.
> add BuiltinMethod for Substring(String, int)
> --------------------------------------------
>
> Key: CALCITE-3395
> URL: https://issues.apache.org/jira/browse/CALCITE-3395
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Youjun Yuan
> Priority: Minor
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> substring function has two versoins:
> 1, Substring(String, int, int)
> 2, Substring(String, int)
> currently in BuiltinMethod.java, only the first one is defined. Need to
> define the second one as well, so that we can use both of them.
> Apache Flink(FunctionGenerator.scala), reference the BuiltinMethod, since
> Calcite only defines 1, not 2, Flink always resolve SUBSTRING to
> Substring(String, int, int) even if there is only 2 parameters. This problem
> happens to be covered by method overloading of java, but it's still a
> potential problem.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
