print("DROP PRIMARY KEY");
print("ADD "); writeColumn(change.getChangedTable(), change.getNewColumn());
    protected void processChange(Database               currentModel,                                 Database               desiredModel,                                 RemovePrimaryKeyChange change) throws IOException    {        print("ALTER TABLE ");        printlnIdentifier(getTableName(change.getChangedTable()));        printIndent();        print("DROP PRIMARY KEY");        printEndOfStatement();    }