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https://issues.apache.org/jira/browse/CALCITE-5135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17537108#comment-17537108
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Julian Hyde commented on CALCITE-5135:
--------------------------------------
In the jira subject and the commit message can you describe the feature that
you are adding. Not what code you changed, or the bug that you perceive existed.
You've added a test for JDBC fn DAY. Is DAY even a valid JDBC function?
You've not added a test for the DAY function.
The TIMESTAMP function should be a separate JIRA case. Can you make a case
whether it should be in Calcite's Core dialect, or in Babel, or enabled in
particular libraries (e.g. oracle, mysql).
> Planner#parse can't parse DAY() function
> ----------------------------------------
>
> Key: CALCITE-5135
> URL: https://issues.apache.org/jira/browse/CALCITE-5135
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.30.0
> Reporter: Mitsunori Komatsu
> Priority: Major
>
> Hi team,
> I might be missing something, but `Planner#parse` can't parse `DAY()`
> function while it can parse other YEAR(), MONTH(), HOUR() and so on.
>
> {code:java}
> import org.apache.calcite.sql.parser.SqlParseException;
> import org.apache.calcite.sql.validate.SqlValidator;
> import org.apache.calcite.tools.FrameworkConfig;
> import org.apache.calcite.tools.Frameworks;
> import org.apache.calcite.tools.Planner;
> public class Main {
> public static void main(String[] args) throws SqlParseException {
> FrameworkConfig config = Frameworks.newConfigBuilder().build();
> {
> Planner planner = Frameworks.getPlanner(config);
> System.out.println(planner.parse("select months(t) from tbl"));
> }
> {
> Planner planner = Frameworks.getPlanner(config);
> System.out.println(planner.parse("select month(t) from tbl"));
> }
> {
> Planner planner = Frameworks.getPlanner(config);
> System.out.println(planner.parse("select hours(t) from tbl"));
> }
> {
> Planner planner = Frameworks.getPlanner(config);
> System.out.println(planner.parse("select hour(t) from tbl"));
> }
> {
> Planner planner = Frameworks.getPlanner(config);
> System.out.println(planner.parse("select days(t) from tbl"));
> }
> {
> Planner planner = Frameworks.getPlanner(config);
> // This throws `org.apache.calcite.sql.parser.SqlParseException:
> Encountered "day" ...`
> System.out.println(planner.parse("select day(t) from tbl"));
> }
> }
> }
> {code}
> Is this a bug? Is there any way to parse DAY() function? Thanks.
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