Large result sets now always create temporary tables instead of temporary files.

h2/src/main/org/h2/expression/ConditionInSelect.java

@@ -46,7 +46,7 @@ public class ConditionInSelect extends Condition {
         query.setSession(session);
         query.setDistinct(true);
         LocalResult rows = query.query(0);
-        session.addTemporaryResult(rows);
+        try {
             Value l = left.getValue(session);
             if (rows.getRowCount() == 0) {
                 return ValueBoolean.get(all);
@@ -72,6 +72,9 @@ public class ConditionInSelect extends Condition {
                 return ValueNull.INSTANCE;
             }
             return ValueBoolean.get(false);
+        } finally {
+            rows.close();
+        }
     }
 
     private Value getValueSlow(LocalResult rows, Value l) {