Hi Shahan,
Try this
SELECT distinct
T0.[empID] as 'SAP ID', isnull(T0.[firstName],'')
+' '+isnull(T0.[middleName],'')+' '+isnull(T0.[lastName],'') as 'Full Name',T1.firstName,
T2.[Remarks] AS 'Dept Name',
T0.[U_IQId]as 'New Iqama Id',T1.[U_IQId]as 'Old Iqama Id',
T1.[UpdateDate] as 'Update Date'
FROM OHEM T0
LEFT JOIN OUDP T2 ON T0.dept=T2.Code
LEFT JOIN AHEM T1 ON T0.empID = T1.EmpID
WHERE getdate() >= T1.[UpdateDate] AND (T1.[UpdateDate]+2) >= getdate() AND
T0.[U_IQId]<> T1.[U_IQId] and T1.U_IQId IS NOT NULL
and let me know the result.
Regards,
Manish