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Rong Rong commented on FLINK-10222: ----------------------------------- I think making it exactly match is probably the best solution here. I briefly considered making the {{opt("()")}} mandatory but that breaks backward compatibility. Most of the reasons why this was not surface previously was that may of the short keywords requires arguments, such as {{as}}. > 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 -- This message was sent by Atlassian JIRA (v7.6.3#76005)