boolean success = parser.parse(content, rootNode);
assertEquals(true, success);
assertEquals(1, rootNode.getChildCount());
AstNode childNode = rootNode.getChildren().get(0);
assertTrue(hasMixinType(childNode.getProperty(JcrLexicon.MIXIN_TYPES), TYPE_ALTER_TABLE_STATEMENT));
assertEquals(3, childNode.getChildCount()); // 2 columns + CHECK constraint
}