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Asked by BritishJeff in MS SQL Server, SQL Server 2005
I am stuck on something that i thought was simple. I would like to have SQL code to retrieve all records in one table (TblEmployees) and if there are matching records in another table (TblReservationDetails), to list them. I need to always have at least one record for the employee table though. Simple, i thought...Left Outer Join. No problem there, but when i then added a filter to the TblReservationDetails, only employees with reservations that matched the criteria showed up, or employees that never had a reservation in the tblreservationdetail table. Employees that had reservations but not for that particular criteria didnt show up. Of course i added the is null, but that is why i got employees with no reservations at all. How can i get the employees to show up that are in the tblemployees table, and also have had reservation that dont match my criteria and therefor their reservaiton info shouldnt show up, but their info should. I have included a simplified version of the SQL as well as an example below:
Example of what i want:
Employee Table
SSN:
000112222
111223333
222334444
ReservationDetail Table
SSN DateStart
000112222 02/01/2009
000112222 02/07/2009
000112222 02/08/2009
222334444 01/01/2008
What i get is:
000112222 02/07/2009
000112222 02/08/2009
111223333 NULL
What i would like:
000112222 02/07/2009
000112222 02/08/2009
111223333 NULL
222334444 NULL
Assume todays date is 02/05/2009
1:
2:
3:
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SELECT tblEmployees.SSN, TblReservationDetail.DateStart
FROM tblEmployees LEFT OUTER JOIN TblReservationDetail ON tblEmployees.SSN = TblReservationDetail.SSN
WHERE (TblReservationDetail.DateStart > GETDATE()) OR (TblReservationDetail.DateStart IS NULL)
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20091021-EE-VQP-81 - Hierarchy / EE_QW_3_20080625
