1、查询含有London的国家信息（选择）
for $p in //country
where contains($p,"London")
return $p
2、查询含有Caesar的莎士比亚戏剧对话
for $speech in //SPEECH[LINE &= 'Caesar' ]
return $speech
3、查询Hamlet对白中含有faith的语句
for $speech in //SPEECH[SPEAKER &= 'HAMLET' and near(., 'faith')]
return $speech
4、查询含有exam的学生信息
for $p in //stu
where contains($p,"exam")
return $p
5、使用URL请求eXist
http://localhost:8080/exist/servlet/db/?_query=for $p in //stu where contains($p,"exam") return $p