CREATE DOMAIN: Built-in data types can now only be changed if no tables exist.

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

@@ -36,6 +36,7 @@ public class TestCompatibility extends TestBase {
         deleteDb("compatibility");
         conn = getConnection("compatibility");
 
+        testDomain();
         testColumnAlias();
         testUniqueIndexSingleNull();
         testUniqueIndexOracle();
@@ -46,6 +47,22 @@ public class TestCompatibility extends TestBase {
         deleteDb("compatibility");
     }
 
+    private void testDomain() throws SQLException {
+        Statement stat = conn.createStatement();
+        stat.execute("create table test(id int primary key) as select 1");
+        try {
+            stat.execute("create domain int as varchar");
+            fail();
+        } catch (SQLException e) {
+            assertKnownException(e);
+        }
+        conn.close();
+        conn = getConnection("compatibility");
+        stat = conn.createStatement();
+        stat.execute("insert into test values(2)");
+        stat.execute("drop table test");
+    }
+
     private void testColumnAlias() throws SQLException {
         Statement stat = conn.createStatement();
         String[] modes = new String[] { "PostgreSQL", "MySQL", "HSQLDB", "MSSQLServer", "Derby", "Oracle", "Regular" };