After some debugging it turns out the issue is in the integration between Apache Drill and the SQL4ES JDBC driver, which doesn't implement the getDate(int, java.util.calendar) method (it's a stub that returns null).
I have submitted an issue to the maintainer of SQL4ES, but I do wonder why does Drill need to pass a Calendar object when calling getDate? What does it expect to receive? Dan On 12 September 2016 at 18:04, Dan Markhasin <minimi...@gmail.com> wrote: > Hi all, > > I'm using Drill to query ElasticSearch using the sql4es driver ( > https://github.com/Anchormen/sql4es) and I've run into an issue where > Drill returns NULL values for Date columns: > > 0: jdbc:drill:zk=local> select Date_01 from > ES23.`data-generator-poc-async`.arm > where Date_01 IS NOT NULL limit 1; > +----------+ > | Date_01 | > +----------+ > | null | > +----------+ > > The DESCRIBE command returns the correct data type (DATE). > > Using other JDBC clients (Squirrel / WorkbenchJ) I am able to run the > exact same query on the exact source, and get the correct data (which is in > the form of 2016-03-21, for example). > > Any idea why it's returning null? >
