Train+Schedule+Query 源代码

汇集 Train+Schedule+Query 相关的电路原理图、PCB工程文件、单片机/FPGA源代码、数据手册与应用设计方案。

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源码文件

# Get name, and optionally the mbox, of each person PREFIX foaf: SELECT ?name ?mbox WHERE { ?person foaf:name ?name . …

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# Get names of people, together with the names of people they know. PREFIX foaf: SELECT ?name ?name2 WHERE { ?person fo…

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# Get names and mboxes, each of which may be optional. PREFIX foaf: PREFIX rdf: SELECT ?name ?mbox WHERE { { ?p…

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# Get optional get the mbox, of each person PREFIX foaf: SELECT ?name WHERE { OPTIONAL { ?person foaf:name ?name } }

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PREFIX rdf: PREFIX ex: SELECT ?val WHERE { ex:foo rdf:value ?val . FILTER regex(?val, "GHI") }

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PREFIX ex: PREFIX rdf: SELECT ?val WHERE { ex:foo rdf:value ?val . FILTER regex(?val, "DeFghI", "i") }

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PREFIX rdf: PREFIX ex: SELECT ?val WHERE { ex:foo rdf:value ?val . FILTER regex(str(?val), "example\\.com") }

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PREFIX rdf: PREFIX ex: SELECT ?val WHERE { ex:foo rdf:value ?val . FILTER regex(?val, "example\\.com") }

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SELECT ?x WHERE {}

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PREFIX : SELECT ?x ?y { :x :p ?x }