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When I want to Run a SPARQL Query within SPARQL Frame I face the following Exception.
```
Exception in thread "main" java.lang.RuntimeException: org.aksw.r2rml.jena.sql.transform.SqlParseException: …
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When I try to run a sparql query with multi line optional blocks I get error:
```
20/12/15 11:16:44 ERROR OntopSPARQLEngine: Spark failed to execute translated SQL query
SELECT ?seed ?seed__dow…
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I tried to rewrite this SPARQL query:
```SPARQL
SELECT DISTINCT ?s
WHERE
{ ?s ?s0
{ ?s0 a }
UNION
{ ?s0 a }
UNION
…
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When I filter by int value, it returned empty list while in the result there should be some values matched. No error message.
This is my test on GraphDB, showing the query can return matched result…
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Hi all,
we are using the sansa stack parser in some projects, such as:
https://github.com/dbpedia/databus-derive
and
https://github.com/dbpedia/databus-client
The first is a maven plugin exten…
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I'll demonstrate the problem using the Sparqlify example: https://github.com/SANSA-Stack/SANSA-Examples/blob/develop/sansa-examples-spark/src/main/scala/net/sansa_stack/examples/spark/query/Sparqlify.…
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As the SANSA query API provides as well possibilities to write queries directly without exposing one endpoint :
```scala
val triples = spark.rdf(input)(path)
val query = "SELECT * WHERE {?s ?p ?o}…
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when filter string in sparql, I used regex() and str() to match the substring. it worked in GraphDB as follows:
![image](https://user-images.githubusercontent.com/22208403/40846306-7ca048dc-65b9-11…
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it seems like the group_by and count functionality gives an error:
![image](https://user-images.githubusercontent.com/22208403/40847195-004ff55e-65bc-11e8-8d68-c46b43886ad0.png)
Below is my quer…
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I'll demonstrate the problem using the Sparqlify example: https://github.com/SANSA-Stack/SANSA-Examples/blob/develop/sansa-examples-spark/src/main/scala/net/sansa_stack/examples/spark/query/Sparqlify.…