A DoS is a malicious attempt to prevent the normal operation of a computer system. You may frequently see the terms 'DDoS' (Distributed Denial of Service) and 'DoS' used interchangeably, but there are some subtle differences.
select w.WorkOrderNumber, w.WorkOrderType, r.result, d.DeptDescription, u.UserID, w.DatetobeStarted, w.DatetobeFinished from WorkOrders.WorkOrders w left join Risks.RAM r on r.RiskID = w.RiskID left join WorkOrders.Dept d on d.DeptID = w.DeptID left join Users.Users u on w.Assignedto = u.UserIDNumber where (u.UserIDNumber is null or (UserIDNUmber = 1003)) and (d.DeptID is null or(d.DeptID = 1)) and (w.FaultID is null or (w.FaultID = 4)) and (r.Result is null or (r.Result = 2)) and (w.Status is null or (w.Status = 9)) and (w.DatetobeStarted is null or (w.DatetobeStarted = '2014-03-04')) and (w.DatetobeFinished is null or (w.DatetobeFinished = '2014-03-04'))
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