Does EOC support SWQL Select Case?

I am trying to setup a case statement in EOC 1.6 using SWQL and everything I do fails.

Boiling it down to something simple still fails

SELECT
CASE WHEN a.AcknowledgedTime = '12/30/1899 8:00:00 AM' Then ''
ELSE a.AcknowledgedTime END
FROM EOC.AlertStatus a

What I am seeing is the default ack time of 12/30/1899 8:00:00 AM this is confusing users. I'd like to simple hide it from my query by using a case and then just showing blank.  I have tried using DateTime('12/30/1899 8:00:00 AM') and using other operators such as like or <>

Testing in SWQL Studio gives the error below:

---------------------------

SWQL Studio

---------------------------

mismatched input 'CASE' expecting '<UP>'

---------------------------

OK  

---------------------------

Testing on the web resource gives the error:

There was an error processing the request.

Any thoughts?

Using 12/30/1899 8:00:00 AM