When adding a comment to a column that has a check constraint, the database couldn't be re-opened.

h2/src/main/org/h2/table/Column.java

@@ -438,12 +438,12 @@ public class Column {
         if (selectivity != 0) {
             buff.append(" SELECTIVITY ").append(selectivity);
         }
-        if (checkConstraint != null) {
-            buff.append(" CHECK ").append(checkConstraintSQL);
-        }
         if (comment != null) {
             buff.append(" COMMENT ").append(StringUtils.quoteStringSQL(comment));
         }
+        if (checkConstraint != null) {
+            buff.append(" CHECK ").append(checkConstraintSQL);
+        }
         return buff.toString();
     }
 

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

@@ -36,6 +36,7 @@ public class TestCases extends TestBase {
     }
 
     public void test() throws Exception {
+        testColumnWithConstraintAndComment();
         testTruncateConstraintsDisabled();
         testPreparedSubquery2();
         testPreparedSubquery();
@@ -82,6 +83,20 @@ public class TestCases extends TestBase {
         deleteDb("cases");
     }
 
+    private void testColumnWithConstraintAndComment() throws SQLException {
+        if (config.memory) {
+            return;
+        }
+        deleteDb("cases");
+        Connection conn = getConnection("cases");
+        Statement stat = conn.createStatement();
+        stat.execute("create table test(id int check id < 500)");
+        stat.execute("comment on column test.id is 'comment'");
+        conn.close();
+        conn = getConnection("cases");
+        conn.close();
+    }
+
     private void testTruncateConstraintsDisabled() throws SQLException {
         deleteDb("cases");
         Connection conn = getConnection("cases");