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https://issues.apache.org/jira/browse/FLINK-9977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16565004#comment-16565004
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Timo Walther commented on FLINK-9977:
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This problem should be discussed in a separate thread. Let's open a JIRA issue
for it, if it does not exist yet. We should first investigate if we can let
Calcite convert simple literals to double. Explicit casts are not a nice
solution but at least they make the operation explicit. If we would
automatically cast the type to double we would lose precision which might be
unintended. A corresponding {{BigDecimal}} method would also return a
{{BigDecimal}} and would cause high serialization overhead for Flink
applications even though a simple double would do the job.
> Refine the docs for Table/SQL built-in functions
> ------------------------------------------------
>
> Key: FLINK-9977
> URL: https://issues.apache.org/jira/browse/FLINK-9977
> Project: Flink
> Issue Type: Improvement
> Components: Documentation
> Reporter: Xingcan Cui
> Assignee: Xingcan Cui
> Priority: Minor
>
> There exist some syntax errors or inconsistencies in documents and Scala docs
> of the Table/SQL built-in functions. This issue aims to make some
> improvements to them.
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