Covers AVG behavior with empty groups

SPARQL 1.1: "If Count(S) = 0, then Avg(S) = "0"^^xsd:integer."
w3c · Feb 22, 2024 · 42267dd · 42267dd
1 parent 7274756
commit 42267dd
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diff --git a/sparql/sparql11/aggregates/agg-avg-03.rq b/sparql/sparql11/aggregates/agg-avg-03.rq
@@ -0,0 +1,2 @@
+SELECT (AVG(?o) AS ?avg)
+WHERE { ?s ?p ?o }
diff --git a/sparql/sparql11/aggregates/agg-avg-03.srx b/sparql/sparql11/aggregates/agg-avg-03.srx
@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<sparql xmlns="http://www.w3.org/2005/sparql-results#">
+  <head>
+    <variable name="avg"/>
+  </head>
+  <results>
+    <result>
+      <binding name="avg">
+        <literal datatype="http://www.w3.org/2001/XMLSchema#integer">0</literal>
+      </binding>
+    </result>
+  </results>
+</sparql>
diff --git a/sparql/sparql11/aggregates/manifest.ttl b/sparql/sparql11/aggregates/manifest.ttl
@@ -32,6 +32,7 @@
     :agg-sum-02
     :agg-avg-01
     :agg-avg-02
+    :agg-avg-03
     :agg-min-01
     :agg-min-02
     :agg-max-01
@@ -252,6 +253,14 @@
     mf:result  <agg-avg-02.srx>
     .
 
+:agg-avg-03 rdf:type mf:QueryEvaluationTest ;
+    mf:name    "AVG with empty group (value defined to be 0)" ;
+	mf:feature sparql:avg ;
+    mf:action
+         [ qt:query  <agg-avg-03.rq> ] ;
+    mf:result  <agg-avg-03.srx>
+    .
+
 :agg-min-01 rdf:type mf:QueryEvaluationTest ;
     mf:name    "MIN" ;
 	mf:feature sparql:min ;