public static int SelectId(int minId, int maxId)
{
int rlt = 0;
string sql = "select max(id) from article where id>" + minId + "and id<" + maxId;
object obj = PostgreHelper.ExecuteScalar(PostGreSqlConnectionString, CommandType.Text, sql, null);
if (Convert.IsDBNull(obj))
{
rlt = 0;
}
else
{
rlt = Convert.ToInt32(obj);
}
return rlt;
}