SPARQL：过滤字符串和整数？

Question

I'm testing SPARQL with Protégé on this data file https://raw.githubusercontent.com/miranda-zhang/cloud-computing-schema/master/example/sparql-generate/result/gcloud_vm.ttl

Validated the following works:

PREFIX cocoon: <https://raw.githubusercontent.com/miranda-zhang/cloud-computing-schema/master/ontology_dev/cocoon.ttl>

SELECT ?VM ?cores
WHERE {
    ?VM a cocoon:VM ;
        cocoon:numberOfCores ?cores .

}

For example, it returns something like:

https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-N1-ULTRAMEM-80-PREEMPTIBLE  "80"@   
https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-N1-HIGHCPU-64-PREEMPTIBLE   "64"@   
https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-N1-STANDARD-2   "2"@    
https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-F1-MICRO    "shared"@   
https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-N1-HIGHCPU-8-PREEMPTIBLE    "8"@    
https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-N1-HIGHCPU-32   "32"@   
https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-N1-HIGHMEM-16-PREEMPTIBLE   "16"@   
https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-N1-STANDARD-96-PREEMPTIBLE  "96"@   
https://w3id.org/cocoon/data/vm/gcloud/CP-COMPUTEENGINE-VMIMAGE-N1-STANDARD-4   "4"@

I'm not sure if I can apply a filter on ?cores , I tried the following, but they returned nothing:

cocoon:numberOfCores "shared" .

Or

FILTER(?cores = "4") .

I'd also like to apply filter on ?cores (ie > 4 and < 8 ), so I have to make it an xsd:integer ? But then I have to get rid of shared which is about < 1 core

Answer 1

Thanks AKSW , impressive knowledge about Protégé.

In the end, I changed my data type to xsd:decimal . Seems to be enough for now.