RelBuilder literal projection with no relation

[Andy Grove]

Hi,

I'm now working on a project to translate some proprietary SQL to a Calcite
relational plan using the RelBuilder API.

I have a question about literal projections. I can do this OK:

// SELECT 123 FROM EMP
builder
    .scan("EMP")
    .project(builder.literal(123))
    .build();

However, if I try and do "SELECT 123" without a relation, it fails with an
ArrayIndexOutOfBoundsException.

// SELECT 123
builder
    .project(builder.literal(123))
    .build();

Is there an extra step I need to add a fake relation, or is this a bug? I'm
happy to dig in and fix this if it is a bug, but wanted to verify first if
this expected to work or not.

Thanks,

Andy.

--

Andy Grove
Chief Architect
AgilData - Simple Streaming SQL that Scales
www.agildata.com