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1.5.55.How Can I Delete a Specific Triple Across Graphs? Home 1.5.57.How Do I Use MINUS in SPARQL Query?

1.5.56.How Do I Use NOT EXISTS in SPARQL Query?

Virtuoso supports "NOT EXISTS" SPARQL 1.1 feature. For example:

SQL> SPARQL
SELECT COUNT(*)
WHERE
  {
    ?s ?p "Novosibirsk"  FILTER NOT EXISTS { ?s ?p "Новосибирск" }
  }

callret-0
INTEGER
313
No. of rows in result: 1

This query is equivalent to the following query:

SQL> SPARQL
SELECT COUNT(*)
WHERE
  {
    { ?s ?p "Novosibirsk" } MINUS { ?s ?p "Новосибирск" } }

callret-0
INTEGER
 313
No. of rows in result: 1
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1.5.55.How Can I Delete a Specific Triple Across Graphs? Home 1.5.57.How Do I Use MINUS in SPARQL Query?