Following Julian's comment, may I add: if your organization is using
Calcite in an unconventional way, it is really helpful for the community to
participate in the release vote process, so that we can spot any issue with
a RC as soon as possible, in order to avoid rolling out releases with
potential regressions.

Best,
Ruben


On Fri, Aug 12, 2022 at 5:40 PM Julian Hyde <[email protected]> wrote:

> I don’t know whether we ever officially supported the Java ‘char’ type.
> It’s worth checking whether there are any tests for it.
>
> More generally: if your organization is using Calcite in an unconventional
> way, consider writing some tests for that area of functionality and
> contributing them. You will be helping yourself and Calcite.
>
> Julian
>
>
> > On Aug 12, 2022, at 7:06 AM, Ruben Q L <[email protected]> wrote:
> >
> > Hello Dmitry,
> >
> > At first glance, it looks like a regression. Could you please create a
> Jira
> > ticket (ideally with a unit test that runs fine 1.30 but fails in 1.31)?
> >
> > Best,
> > Ruben
> >
> >
> > On Fri, Aug 12, 2022 at 2:48 PM Dmitry Sysolyatin <
> [email protected]>
> > wrote:
> >
> >> Hi!
> >> I have a problem with char data type after upgrading from 1.30 to 1.31.
> I
> >> tried to execute a simple query "SELECT c.relkind FROM
> pg_catalog.pg_class
> >> c" (relkind is JavaType(char) NOT NULL) and got an exception:
> >>
> >> Unable to implement EnumerableCalc(expr#0..32=[{inputs}],
> relkind=[$t16]):
> >> rowcount = 100.0, cumulative cost = {200.0 rows, 3501.0 cpu, 0.0 io},
> id =
> >> 28
> >>  EnumerableTableScan(table=[[default, pg_catalog, pg_class]]): rowcount
> =
> >> 100.0, cumulative cost = {100.0 rows, 101.0 cpu, 0.0 io}, id = 19
> >>
> >> Suppressed: java.lang.RuntimeException: while resolving method
> >> 'toChar[class java.lang.Object]' in class class
> >> org.apache.calcite.runtime.SqlFunctions
> >> at org.apache.calcite.linq4j.tree.Types.lookupMethod(Types.java:318)
> >> at org.apache.calcite.linq4j.tree.Expressions.call(Expressions.java:448)
> >> at org.apache.calcite.linq4j.tree.Expressions.call(Expressions.java:460)
> >>
> >> Queries with char literal work OK: "SELECT 'r';"
> >> Does someone have an idea what can be wrong ?
> >>
>
>

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