如何在多个条件下使用ASK WHERE语句（sparql）

我想检查一个实体是否有下列类型之一。如果是，则查询必须返回true

PREFIX basekb:<http://rdf.basekb.com/ns/>

basekb:music.release_track
basekb:book.written_work
basekb:book.book
basekb:music.release
basekb:music.album
basekb:tv.tv_series.episode
basekb:music.composition
basekb:music.recording
basekb:film.film
basekb:fictional_universe.fictional_character

---

问题: 我提出了以下问题。有没有更好的方法来解决这个问题

PREFIX basekb:<http://rdf.basekb.com/ns/>
PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdf1:<http://www.w3.org/2000/01/rdf-schema#>

ASK where 
{
          {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:music.release_track} 
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:book.written_work}
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:book.book}
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:music.release}
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:music.album}
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:tv.tv_series.episode}
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:music.composition}
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:music.recording}
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:film.film}
    UNION {basekb:m.0109yb6 rdf:type ?x; rdf:type basekb:fictional_universe.fictional_character}
}

前缀basekb:
前缀rdf：
前缀rdf1：
问哪里
{
{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:music.release_track}
联合{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:book.writed_work}
联合{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:book.book}
联合{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:music.release}
联合{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:music.album}
联合体{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:tv.tv_series.eption}
联合{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:music.composition}
联合{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:music.recording}
联合{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:film.film}
联合{basekb:m.0109yb6 rdf:type？x；rdf:type basekb:virtual_universe.virtual_character}
}

---

回答：TRUE

您编写的查询有点奇怪。没有使用

？x

变量，因此可以立即将其简化为：

ASK where 
{
          {basekb:m.0109yb6 rdf:type basekb:music.release_track} 
    UNION {basekb:m.0109yb6 rdf:type basekb:book.written_work}
    #-- ...
    UNION {basekb:m.0109yb6 rdf:type basekb:fictional_universe.fictional_character}
}

不过，仍然有很多重复的代码。您可以使用SPARQL 1.1的值来指定变量

类型

的允许值，然后只需询问您的实体是否有

rdf:type

的这些值之一：

前缀basekb:
前缀rdf：
问哪里{
basekb:m.0109yb6 rdf:类型？类型
值？类型{
basekb:music.release\u曲目
basekb：书本、书面作品
basekb:book.book
basekb:music.release
basekb:music.album
basekb:tv.tv_系列节目
basekb：音乐。作曲
basekb：音乐。录音
电影
basekb：虚构的宇宙
}
}

我想如果我使用分号，就不需要使用x。好像：Select？label where{basekb:m.0109yb6 rdf:type？x；rdfs:label？label}

类似于

Select？label where{basekb:m.0109yb6 rdf:type？x？？x rdfs:label？label}@HaniGoc在那些查询中你根本没有使用？x，这是我的观点。你的询问是完全合法的；只是里面有一些没用的东西。您无法从ASK查询返回变量绑定，因此？X在原始查询中没有任何用途。对于SELECT查询，执行类似于

SELECT？label where{values？x{…}？object rdf:type？x；rdfs:label？label}

的操作非常有意义。

ASK where 
{
          {basekb:m.0109yb6 rdf:type basekb:music.release_track} 
    UNION {basekb:m.0109yb6 rdf:type basekb:book.written_work}
    #-- ...
    UNION {basekb:m.0109yb6 rdf:type basekb:fictional_universe.fictional_character}
}