#159 (#400)

* #159

* #159: Removed constraint on sub-SELECTs

Author: HolgerKnublauch

shacl12-sparql/index.html

@@ -1534,9 +1534,8 @@ <h2>Pre-binding of Variables in SPARQL Queries</h2>
 				<ul>
 					<li>SPARQL queries must not contain a <code>MINUS</code> clause</li>
 					<li>SPARQL queries must not contain a federated query (<code>SERVICE</code>)</li>
-					<li>SPARQL queries must not contain a <code>VALUES</code> clause</li>
+					<li>SPARQL queries must not contain a <code>VALUES</code> clause that mentions any potentially pre-bound variable</li>
 					<li>SPARQL queries must not use the syntax form ​​<code>AS ?var</code> for any potentially pre-bound variable</li>
-					<li><a data-cite="sparql12-query/#subqueries">Subqueries</a> must return all potentially pre-bound variables, except <code>shapesGraph</code> and <code>currentShape</code> which are optional as already mentioned in <a href="#sparql-constraints-prebound"></a></li> 
 				</ul>
 			</div>
 
@@ -1848,6 +1847,7 @@ <h2>Changes between SHACL 1.0 SPARQL and SHACL 1.2 SPARQL Extensions</h2>
 				<li>Added the <a>node expression function</a> <a href="#SelectExpression"><code>sh:SelectExpression</code></a>, see <a href="https://github.com/w3c/data-shapes/issues/288">Issue 288</a></li>
 				<li>Added support for <a>annotation properties</a>, see <a href="https://github.com/w3c/data-shapes/issues/327">Issue 327</a></li>
 				<li>Added the <a>node expression function</a> <a href="#SPARQLExprExpression"><code>sh:SPARQLExprExpression</code></a>, see <a href="https://github.com/w3c/data-shapes/issues/315">Issue 315</a></li>
+				<li>Clarified that VALUES clauses are only disallowed when they mention <a href="#pre-binding">pre-bound variables</a> and removed the restriction on sub-SELECTs, see <a href="https://github.com/w3c/data-shapes/issues/159">Issue 159</a></li>
 			</ul>
 		</section>