[英]SPARQL: filter on both string and integer?
我正在此數據文件上使用 Protégé 測試 SPARQL https://raw.githubusercontent.com/miranda-zhang/cloud-computing-schema/master/example/sparql-generate/result/gcloud_vm.ttl
驗證了以下工作:
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 .
}
例如,它返回如下內容:
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"@
我不確定是否可以在?cores
上應用過濾器,我嘗試了以下操作,但它們什么也沒返回:
cocoon:numberOfCores "shared" .
或者
FILTER(?cores = "4") .
我還想在?cores
上應用過濾器(即> 4
和< 8
),所以我必須將其設為xsd:integer
? 但是后來我必須擺脫大約< 1 core
的shared
感謝AKSW ,對 Protégé 的了解令人印象深刻。
最后,我將數據類型更改為xsd:decimal
。 目前看來已經足夠了。
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