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from rdflib import Graph
g = Graph()
data = """
<urn:a> <urn:p> 1 .
<urn:b> <urn:p> 3 .
<urn:c> <urn:q> 1 .
"""
g.parse(data=data, format="turtle")
def test_group_by():
query = "SELECT ?p" "WHERE { ?s ?p ?o } " "GROUP BY ?p"
qres = g.query(query)
assert len(qres) == 2
def test_having_aggregate_eq_literal():
query = (
"SELECT ?p (avg(?o) as ?a) "
"WHERE { ?s ?p ?o } "
"GROUP BY ?p HAVING (avg(?o) = 2 )"
)
qres = g.query(query)
assert len(qres) == 1
def test_having_primary_expression_var_neq_iri():
query = "SELECT ?p " "WHERE { ?s ?p ?o } " "GROUP BY ?p HAVING (?p != <urn:foo> )"
qres = g.query(query)
assert len(qres) == 2
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