anchor.diff:  -----------------------------------------------------------------------------------------------------------------
   public class PersonTable {
   
  -    public static final ColumnDef<Long>   ID         = ColumnDefs.long("id");
  -    public static final ColumnDef<String> FIRST_NAME = ColumnDefs.varchar("first_name");
  -    public static final ColumnDef<String> LAST_NAME  = ColumnDefs.varchar("last_name");
  -    public static final ColumnDef<Integer> AGE       = ColumnDefs.integer("age");
  -    public static final ColumnDef<Gender> GENDER     = ColumnDefs.enum("gender", Gender.class);
  -
  -    public static final TableDef TABLE = new TableDef("person", FIRST_NAME, LAST_NAME, AGE, GENDER);
  +    static final ColumnDef<Long>   ID         = ColumnDefs.long("id");
  +    static final ColumnDef<String> FIRST_NAME = ColumnDefs.varchar("first_name");
  +    static final ColumnDef<String> LAST_NAME  = ColumnDefs.varchar("last_name");
  +    static final ColumnDef<Integer> AGE       = ColumnDefs.integer("age");
  +    static final ColumnDef<Gender> GENDER     = ColumnDefs.enum("gender", Gender.class);
  +
  +    static final TableDef TABLE = new TableDef("person", FIRST_NAME, LAST_NAME, AGE, GENDER);
   
   }
   -----------------------------------------------------------------------------------------------------------------
  
positive.code: Building SQL select statements is now very easy, especially if you know
  SQL:
  
  -------------------------------------------------
  // find all female entries
  final SqlCommand<SelectResult> command1 = SQL
      .select(PersonTable.TABLE.getColumns())
      .where(PersonTable.GENDER.eq(Gender.FEMALE));
  
  // find all entries with age greater than 18
  final SqlCommand<SelectResult> command2 = SQL
      .select(PersonTable.TABLE.getColumns())
      .where(PersonTable.AGE.gt(18))
      .orderBy(PersonTable.LAST_NAME, PersonTable.FIRST_NAME);
  
  // find the average age grouped by gender
  final SqlCommand<SelectResult> command3 = SQL
      .select(PersonTable.GENDER, Sql.avg(PersonTable.AGE))
      .groupBy(PersonTable.GENDER);
  ---------------------------------------------------------
  
  Well, while this looks astonishingly easy, there are some more details
  
negative.code:         }
  
      }
  
      @Nonnull private final PersonId id;
      @Nonnull private final String firstName;
  