检查用户是否有权限

/// <summary>
/// 判断当前用户是否具有指定权限 （如果有为 1）
/// </summary>
/// <param name="id">当前用户ID</param>
/// <param name="powerName">权限名称</param>
/// <returns>返回查询条数：如果有为 1</returns>
public long CheckHasPower(long id,string powerName)
{
string sql = @"SELECT COUNT(*) FROM (
SELECT ADMINID FROM TD_ADMIN_ROLE WHERE ROLEID IN (
SELECT ROLEID FROM TD_ROLE_POWER WHERE POWERID = (
SELECT ID FROM TD_POWER WHERE NAME = :NAME )
)
) t WHERE t.ADMINID=:ID ";
object count = OracleHelper.ExecuteScalar(sql, new OracleParameter(":NAME", powerName),
new OracleParameter() { ParameterName = ":ID", Value = id }
);
return Convert.ToInt64(count);
}