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1.5.44.How can I perform search for predicate values? Home 1.5.46.How to clear graphs which are related to empty graphs?

1.5.45.How can I use INSERT via CONSTRUCT Statements?

You can write an ordinary CONSTRUCT statement, ensure that it generates the triples intended to be added, and then replace the leading CONSTRUCT keyword with the INSERT INTO phrase.

Example:

  1. Assume new triples need to be added for the equivalentClass:

    CONSTRUCT
  {
    ?s <http://www.w3.org/2002/07/owl#equivalentClass> `iri (bif:replace(?o,'http://schema.rdfs.org/', 'http://schema.org/'))`
   }
FROM <http://www.openlinksw.com/schemas/rdfs>
WHERE
  {
    ?s <http://www.w3.org/2002/07/owl#equivalentClass> ?o
  };

  2. Execute the CONSTRUCT query from the htp://cname/sparql SPARQL endpoint.

  3. View the generated triples to ensure they are correct.

  4. Replace CONSTRUCT with INSERT INTO:

    SPARQL INSERT INTO <http://www.openlinksw.com/schemas/rdfs>
  {
    ?s <http://www.w3.org/2002/07/owl#equivalentClass> `iri (bif:replace(?o,'http://schema.rdfs.org/', 'http://schema.org/'))`
   }
FROM <http://www.openlinksw.com/schemas/rdfs>
WHERE
  {
    ?s <http://www.w3.org/2002/07/owl#equivalentClass> ?o
  } ;
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