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https://issues.apache.org/jira/browse/FLINK-10340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16632801#comment-16632801
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ASF GitHub Bot commented on FLINK-10340:
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xccui commented on a change in pull request #6700: [FLINK-10340][table] Add
Cosh math function supported in Table API and SQL
URL: https://github.com/apache/flink/pull/6700#discussion_r221416690
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/expressions/mathExpressions.scala
##########
@@ -104,6 +104,21 @@ case class Log2(child: Expression) extends
UnaryExpression with InputTypeSpec {
override def toString: String = s"log2($child)"
}
+case class Cosh(child: Expression) extends UnaryExpression with InputTypeSpec {
Review comment:
Why do we need to extend `InputTypeSpec` here?
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> Add Cosh math function supported in Table API and SQL
> -----------------------------------------------------
>
> Key: FLINK-10340
> URL: https://issues.apache.org/jira/browse/FLINK-10340
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.6.0
> Reporter: Sergey Tsvetkov
> Assignee: vinoyang
> Priority: Minor
> Labels: pull-request-available
>
> Implement udf of cosh, just like in oracle
> [https://docs.oracle.com/cd/B28359_01/server.111/b28286/functions031.htm#SQLRF00623]
>
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