protected sql_select(string name, string command, type_sql type
, string if_cond, string fields, string from, string join, string data_fields)
{
_name = name; _command = command;
_if_cond = if_cond; _type = type;
_fields = fields; _from = from; _join = join;
_data_fields = data_fields;
}
public sql_select(sql_select cpy)
{
_name = cpy._name; _command = cpy._command;
_if_cond = cpy._if_cond; _type = cpy._type;
_fields = cpy._fields; _from = cpy._from; _join = cpy._join;
}
