Teeter-Totter

Observation Tower at Antietam National Battlefield

While hunting down the solution to a web forms problem, I found I needed a way to change the database such that I knew an event happened.  I was changing the record status to completed, but I had to keep going back and resetting them to active to continue testing. What I wanted was to toggle a field.  

So 

DECLARE @anameVarchar(100);
SELECT @aname= CASE
WHEN LEFT([Hospital],1)='_' THEN SUBSTRING([Hospital],2,len([Hospital])-1)
ELSE '_' + [Hospital]
END
FROM [dbo].[aTable]
WHERE  ID  =@ID;
                        UPDATE dbo.aTable
                        SET  Hospital=@aname
                        WHERE  ID  =@ID

What this does is toggle the Hospital Field by inserting and removing an underscore.  A quick and easy way to