[jira] [Updated] (CALCITE-5352) Babel parser does not recognize character literal with DATE_PART function

["Julian Hyde (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-5352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-5352:
---------------------------------
    Summary: Babel parser does not recognize character literal with DATE_PART function  (was: Babel parser does not recogize quote string with DATE_PART function)

> Babel parser does not recognize character literal with DATE_PART function
> -------------------------------------------------------------------------
>
>                 Key: CALCITE-5352
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5352
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: carton.swing
>            Priority: Major
>
> While using babel parser(calcite-babel's SqlBabelParserImpl) to parse PostgreSQL syntax:
> {code:java}
> planner.parse("SELECT DATE_PART('week', TIMESTAMP '2022-10-31')"){code}
> it will throws exception.
> But if I use:
> {code:java}
> planner.parse("SELECT DATE_PART(week, TIMESTAMP '2022-10-31')"){code}
> the parser works well.
>  
> However, the former syntax, which is a quote-string, is correct according to : [https://www.postgresql.org/docs/9.1/functions-datetime.html]
> |Note that here the {{field}} parameter needs to be a string value, not a name. The valid field names for {{date_part}} are the same as for {{{}extract{}}}.
> SELECT date_part('day', TIMESTAMP '2001-02-16 20:38:40');|
> The first argument should be a quote string instead of a TimeUnit token.
>  



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