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https://issues.apache.org/jira/browse/FLINK-10398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16655319#comment-16655319
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ASF GitHub Bot commented on FLINK-10398:
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xccui edited a comment on issue #6736: [FLINK-10398][table] Add Tanh math
function supported in Table API and SQL
URL: https://github.com/apache/flink/pull/6736#issuecomment-431031320
Hi @pnowojski, I suppose that is because SQL is not case-sensitive. Usually,
we use uppercase for SQL function names and thus lowercase for parameter names
which are distinctive. While Java and Scala are case-sensitive and the function
names use camel-case. Thus we use uppercase for their parameters. The
descriptions should be consistent with the function definitions.
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> Add Tanh math function supported in Table API and SQL
> -----------------------------------------------------
>
> Key: FLINK-10398
> URL: https://issues.apache.org/jira/browse/FLINK-10398
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: vinoyang
> Assignee: vinoyang
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.7.0
>
>
> refer to : https://www.techonthenet.com/oracle/functions/tanh.php
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