diff --git a/DBEngine.cpp b/DBEngine.cpp
index 08becc2..208da05 100755
--- a/DBEngine.cpp
+++ b/DBEngine.cpp
@@ -189,6 +189,10 @@ Relation DBEngine::crossProduct(Relation r1, Relation r2){
 	for (int i = 0; i < r2.getAttributes().size(); ++i) {
 		new_atts.push_back(r2.getAttributes()[i]);
 	}
+	
+	for (int i = 0; i < new_atts.size(); ++i) {
+		new_atts[i].clearAllValues();
+	}
 
 	//currently all returned relations are called TEMP
 	Relation new_r("TEMP", new_atts);
diff --git a/a.out b/a.out
index fdcea51..5ff8697 100755
Binary files a/a.out and b/a.out differ