Fix nightly build

h2/src/test/org/h2/test/db/TestAlter.java

@@ -109,10 +109,14 @@ public class TestAlter extends TestBase {
     }
 
     /**
-     * Tests a bug we used to have where altering the name of a column that had a check constraint
-     * that referenced itself would result in not being able to re-open the DB.
+     * Tests a bug we used to have where altering the name of a column that had
+     * a check constraint that referenced itself would result in not being able
+     * to re-open the DB.
      */
     private void testAlterTableAlterColumnWithConstraint() throws SQLException {
+        if (config.memory) {
+            return;
+        }
         stat.execute("create table test(id int check(id in (1,2)) )");
         stat.execute("alter table test alter id rename to id2");
         // disconnect and reconnect