Hannah Bast

Results 43 issues of Hannah Bast

Dear maintainers, I just tried your code on [this small NT file](https://github.com/wallscope/olympics-rdf/blob/master/data/olympics-nt-nodup.zip) with 1,781,625 triples on an Ubuntu 20.04 machine (128 GB RAM, AMD Ryzen 9 5900X). Here is what...

When typing a string with an Umlaut, the respective AC query fails with the following error message: ``` ASSERT FAILED (resultOfParseAndRemainingText.remainingText_.empty(); in /local/data/qlever/qlever-code/src/parser/SparqlParser.cpp, line 31, function static ParsedQuery SparqlParser::parseQuery(std::string)) ```

The following `CONSTRUCT` query on the `olympics` dataset yields an invalid triple, where the literal contains unescaped string: ``` curl -s https://qlever.cs.uni-freiburg.de/api/olympics -H "Accept: text/tab-separated-values" -H "Content-type: application/sparql-query" --data "PREFIX...

The following query on `olympics` ignores the `FILTER`: ``` SELECT ?o WHERE { ?s ?p ?o . FILTER REGEX(?o, "Gabby") } ``` [Try it on QLever](https://qlever.cs.uni-freiburg.de/olympics/nHk8zW)

Works fine with value literals. For foreign IRIs or literals, works only if they don't take part in any other operation (like a JOIN or SORT). That's more a job...

Just playing around with some stuff to see how this might work.

Starting with strlen.

The query planning of the following query on PubChem takes 20 seconds. I also tried with commit d23f4c (from 15.08.2022, before the three PRs that clean up the query planner)...

Graph patterns like `SELECT * WHERE { ?s ?p ?s }` are currently not supported by QLever. The error message so far looked like a bug ("Assertion !lastRow.empty() failed"). Now...

The error message from the title is triggered by the following query on PubChem. This might be related to the recent #1263. Note that `substance:SID46505803` exists, yet no triples match...