SPARQL Filter Date VALUES-CodePudding

I have created an RDF dataset in protege having dates of type "datetime" (I have not found option of creating simple dates)

I have the following query:

SELECT ?date
 WHERE {
   ?p ex:date ?date. 
   VALUES ?date {  2022-07-27T00:00:00  } 
}

And I am getting the following error:

Undefined namespace prefix at 'T00' before ':00'

Is there a way to use VALUES to filter dates? I tried to use string as the type of the dates in protege' but I am still cannot filter dates using 'VALUES' in the SPARQL query.

Could you help me, please?

CodePudding user response：

The problem solved after putting the literal in double quotes and also adding the datatype I needed as follows:

SELECT ?date WHERE { ?p ex:date ?date. VALUES ?date { "2022-07-27"^^<w3.org/2001/XMLSchema#dateTime> } }