public string ToSql(Column column)
 {
     var modifiers = column.Length != null ? string.Format("({0})", column.Length) : "";
     return string.Format("[{0}] [{1}]{2}", column.Name, ToSql(column.DbType), modifiers);
 }
 public void CreateColumn(string columnName, DbType type, int length)
 {
     var column = new Column(columnName, type, length);
     var addColumnSql = string.Format(@"alter table {0} add {1}", Name, Adapter.ToSql(column));
     Adapter.DbSql(addColumnSql);
 }