Stardog does not support short SPARQL CONSTRUCT?

Hi, I noticed that Stardog cannot handle SPARQL CONSTRUCT when using the short syntax:

CONSTRUCT
WHERE { ?s ?p ?o }

It only works if you fill in the CONSTRUCT, such as:

CONSTRUCT { ?s ?p ?o }
WHERE { ?s ?p ?o }

It would be nice if Stardog could support this :slight_smile:

Hi, Stardog supports construct where { ?s ?p ?o }. What exactly query doesn’t work?

Best,
Pavel

Hi Pavel, I always get the following error:

Error!
{"message":"can not use shorthand CONSTRUCT: graph pattern in WHERE clause is not a basic pattern.","code":"MalformedQuery"}

It does work when doing copying the part inside the WHERE to the CONSTRUCT

What version of Stardog is it? How do you run the query?

It’s v5.2.1. and I tried it in the Stardog web viewer, where it fails.

If I use it via another application (thus sending requests to the stardog server) there is no error

OK, now I see what happens.

The old Webconsole adds an implicit LIMIT to the query and it turns out there’s a bug with parsing construct where { ?s ?p ?o } limit 10. We’ll fix it.

Meanwhile you should stop using Webconsole in favor of Stardog Studio (which doesn’t add limits). Webconsole won’t be supported in the future.

Thanks,
Pavel

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.