[jira] [Updated] (CALCITE-5143) Allow custom time unit abbreviations in FLOOR, CEIL, EXTRACT, DATE_PART, DATEADD, DATEDIFF and similar functions

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

     [ https://issues.apache.org/jira/browse/CALCITE-5143?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-5143:
---------------------------------
    Summary: Allow custom time unit abbreviations in FLOOR, CEIL, EXTRACT, DATE_PART, DATEADD, DATEDIFF and similar functions  (was: Babel parser can't parse DATEADD(S, ...))

> Allow custom time unit abbreviations in FLOOR, CEIL, EXTRACT, DATE_PART, DATEADD, DATEDIFF and similar functions
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-5143
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5143
>             Project: Calcite
>          Issue Type: Bug
>          Components: babel
>    Affects Versions: 1.30.0
>            Reporter: Mitsunori Komatsu
>            Assignee: Jiajun Xie
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.31.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I'm trying to parse and rewrite some SQL dialects including SQL Server which supports some functions that receive HOUR as an argument using. But Calcite's Planner#parse can't handle this kind of SQL.
> {code:java}
> FrameworkConfig config = Frameworks.newConfigBuilder().build();
> Planner planner = Frameworks.getPlanner(config);
> System.out.println(planner.parse("SELECT DATEDIFF(HOUR, NOW(), NOW())")); {code}
> {code:java}
> Exception in thread "main" org.apache.calcite.sql.parser.SqlParseException: Incorrect syntax near the keyword 'HOUR' at line 2, column 21.
> Was expecting one of:
>     "ALL" ...
>     "ARRAY" ...
>     "CASE" ...
>    :
>     "GROUPING" ...
>     "HOUR" ...
>     "HOUR" "(" ...
>     "*" ...
>     ")" ...
>     
>     at org.apache.calcite.sql.parser.impl.SqlParserImpl.convertException(SqlParserImpl.java:389)
>     at org.apache.calcite.sql.parser.impl.SqlParserImpl.normalizeException(SqlParserImpl.java:153)
>     at org.apache.calcite.sql.parser.SqlParser.handleException(SqlParser.java:145)
>     at org.apache.calcite.sql.parser.SqlParser.parseQuery(SqlParser.java:160)
>     at org.apache.calcite.sql.parser.SqlParser.parseStmt(SqlParser.java:185)
>     at org.apache.calcite.prepare.PlannerImpl.parse(PlannerImpl.java:214)
>     at org.apache.calcite.tools.Planner.parse(Planner.java:50) {code}
> This issue happens with other date/time keyword-ish ones like YEAR.
> I guess it happens because HOUR and YEAR are reserved keywords.
> Is this an expected behavior? If so, is there any workaround?



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