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https://issues.apache.org/jira/browse/FLINK-10222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16593881#comment-16593881
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vinoyang commented on FLINK-10222:
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[~walterddr] you are right, I tried a lot of test cases built on keywords in
the suffix list. I have always wondered why some keywords do not appear, such
as the *log* keyword, *log2*, *log10*, *logabc*, can be resolved normally, and
later found that it requires parameters. Well, if [~fhueske] have no
objections, I can fix this PR, in the form of a regular exact match.
> Table scalar function expression parses error when function name equals the
> exists keyword suffix
> -------------------------------------------------------------------------------------------------
>
> Key: FLINK-10222
> URL: https://issues.apache.org/jira/browse/FLINK-10222
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Reporter: vinoyang
> Priority: Major
>
> Suffix extraction in ExpressionParser.scala does not actually support
> extraction of keywords with the same prefix. For example: Adding suffix
> parsing rules for {{a.fun}} and {{a.function}} simultaneously will causes
> exceptions.
> some discussion :
> [https://github.com/apache/flink/pull/6432#issuecomment-416127815]
> https://github.com/apache/flink/pull/6585#discussion_r212797015
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