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Jark Wu commented on FLINK-4597: -------------------------------- I have a look at Calcite documentation [1] , this syntax is concise and clear. +1 for this and I will close this issue. [1] https://calcite.apache.org/docs/reference.html#comparison-operators > Improve Scalar Function section in Table API documentation > ---------------------------------------------------------- > > Key: FLINK-4597 > URL: https://issues.apache.org/jira/browse/FLINK-4597 > Project: Flink > Issue Type: Improvement > Components: Table API & SQL > Reporter: Jark Wu > Assignee: Jark Wu > Priority: Minor > > The function signature in Scalar Function section is a little confusing. > Because it's hard to distinguish keyword and parameters. Such as : > {{EXTRACT(TIMEINTERVALUNIT FROM TEMPORAL)}}, user may not know TEMPORAL is a > parameter after first glance. I propose to use {{<>}} around parameters, i.e. > {{EXTRACT(<TIMEINTERVALUNIT> FROM <TEMPORAL>)}} -- This message was sent by Atlassian JIRA (v6.3.4#6332)