public override string ToString()
{
StringBuilder sb = new StringBuilder("get_partition_args(");
sb.Append("Db_name: ");
sb.Append(Db_name);
sb.Append(",Tbl_name: ");
sb.Append(Tbl_name);
sb.Append(",Part_vals: ");
sb.Append(Part_vals);
sb.Append(")");
return sb.ToString();
}