mysql rename results?

I have this function

SELECT LEFT( eventName, INSTR( CONCAT( eventName, ':' ) , ':' ) ) AS prefix, COUNT( * )
FROM trackingevent
GROUP BY LEFT( eventName, INSTR( CONCAT( eventName, ':' ) , ':' ) )
UNION SELECT homeupload, COUNT( * )
FROM link
GROUP BY homeupload
UNION
SELECT mediaType, COUNT( * )
FROM link
GROUP BY mediaType
UNION 
SELECT emailSub, COUNT(*) FR开发者_如何学JAVAOM link WHERE emailSub='1' GROUP BY emailSub

and it generates something like

prefix  COUNT(*)
CONTEST_ENTRY:  4
EMAIL_SHARE     77
FLICKR_SHARE    9
SHARE_FACEBOOK  105
SHARE_STATION_LOGIN     223
TWEET_SHARE     18
0   320
1   1
image   320
video   1
1   195

I want to rename the 0,1 and the other 1 to something else. Maybe homeupload, onsite, or something.

The first 0 and 1 are UNION SELECT homeupload, COUNT( * ) FROM link GROUP BY homeupload

As there are two values

The second 1 is UNION SELECT emailSub, COUNT(*) FROM link WHERE emailSub='1' GROUP BY emailSub

How can I rename the results?

in short, using IF

...
UNION
SELECT IF(homeupload = 0, 
            "someStringDescribingStatus0",
            "someStringDescribingStatus1") as homeUploadStatus,
       count(*)
FROM ...