[hibernate-dev] Empty IN list support

Vlad Mihalcea mihalcea.vlad at gmail.com
Fri Feb 16 05:23:40 EST 2018

I see that we are only using it for testing so that we can skip the:


query on certain Dialects.

We could use this info when rendering the JPQL/HQL queries to throw an
exception before executing the query.
Nevertheless, an exception will be thrown anyway even if we don't do it.


On Fri, Feb 16, 2018 at 11:21 AM, Bregler, Jonathan <
jonathan.bregler at sap.com> wrote:

> Hi,
> HANA doesn't support empty IN lists, so executing an HQL query that gets
> transformed into a SQL query with an empty IN list results in a SQL parser
> error on the database side. I noticed that the Dialect class already
> defines a method called "supportsEmptyInList()" which according to the
> Javadoc returns "True if empty in lists are supported; false otherwise".
> However, this method doesn't seem to be used anywhere in the Hibernate
> code. Is there a reason for that?
> Thanks,
> Jonathan
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