Re: question about ScalarFunction about timestamp in where in(...) clause

[Julian Hyde <jh...@apache.org>]

I’m not sure that we’ve ever tested a user-defined function that returns java.sql.Date, java.sql.Time or java.sql.Timestamp. Can you log a bug for this?

If you could provide a test case that would be even better. See how we wrote the test case in https://issues.apache.org/jira/browse/CALCITE-986.

Julian


> On Dec 30, 2015, at 7:12 PM, DroopyHoo <ol...@gmail.com> wrote:
> 
> Hi,
> 
> I use ScalarFunction to define a UDF which return type is timestamp,and met a problem.
> 
> The error SQL :
> 
> select * from table where UDF(field)  in (cast('1970-01-01 00:00:00'), cast('1997-02-01 00:00:00'));
> 
> Error stack:
> Caused by: java.lang.RuntimeException: Error while compiling generated Java code:
> ...............
> ..............
>        at org.apache.calcite.avatica.Helper.wrap(Helper.java:37)
>        at org.apache.calcite.adapter.enumerable.EnumerableInterpretable.toBindable(EnumerableInterpretable.java:108)
>        at org.apache.calcite.prepare.CalcitePrepareImpl$CalcitePreparingStmt.implement(CalcitePrepareImpl.java:1044)
>        at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:293)
>        at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:188)
>        at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:669)
>        at org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:570)
>        at org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:539)
>        at org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:173)
>        at org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:504)
>        at org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:477)
>        at org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:109)
>        ... 33 more
> Caused by: org.codehaus.commons.compiler.CompileException: Line 66, Column 101: Cannot cast "long" to "java.sql.Timestamp"
>        at org.codehaus.janino.UnitCompiler.compileError(UnitCompiler.java:10092)
>        at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:3839)
>        at org.codehaus.janino.UnitCompiler.access$6400(UnitCompiler.java:183)
>        at org.codehaus.janino.UnitCompiler$10.visitCast(UnitCompiler.java:3246)
>        at org.codehaus.janino.Java$Cast.accept(Java.java:3802)
> 
> 
> I found the Generated Code cause Exception :
> if (v && v1 == org.apache.calcite.runtime.SqlFunctions.toLong((java.sql.Timestamp) org.apache.calcite.avatica.util.DateTimeUtils.timestampStringToUnixDate("1986-12-18 00:00:00"))
> 
> 
> -- 
> -------
> Wei Hu
>