Done:

Done:

        o -ALTER TABLE ADD COLUMN does not honor DEFAULT and non-CHECK CONSTRAINT
        o -ALTER TABLE ADD COLUMN column DEFAULT should fill existing
          rows with DEFAULT value
        o -Allow ALTER TABLE to modify column lengths and change to binary
          compatible types

Remove:

        o Allow columns to be reordered using ALTER ... POSITION i col1 [,col2];
          have SELECT * and INSERT honor such ordering