Re: "not in a transaction", but only sometimes

[Andy Seaborne]

On 12/09/2019 04:34, Laura Morales wrote:
set union mode on the dataset

I mean you're talking about this

     <#dataset> rdf:type         tdb:DatasetTDB ;
         tdb:location "DB" ;
         tdb:unionDefaultGraph true ;
         .

or (3.13.0) the service for default to query all graphs.

is this referring to "?default-graph-uri=" or does it refer to other new features in 
Fuseki 3.13.0 (perhaps something like "tdb:unionDefaultGraph" but for RDFDataset instead)?

The dataset can have a ja:context setting and that can be the one for 
query union graph.  Not "?default-graph-uri=" which is protocol and per 
query call.

None of this is 3.13.0.

3.13.0 adds setting context on a query endpoint so you can have two 
query services, one with and one without the context setting (ditto 
timeout settings).

    Andy