mysql重命名结果？

Question

我有这个功能

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(*) FROM link WHERE emailSub='1' GROUP BY emailSub

并生成类似

的内容

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

我想将0,1和其他1重命名为其他内容。也许是homeupload，现场或其他什么。

第一个0和1是UNION SELECT homeupload，COUNT（*）     来自链接     GROUP BY homeupload

因为有两个值

第二个是UNION SELECT emailSub，COUNT（*）FROM link WHERE emailSub =＆＃39; 1＆＃39; GROUP BY emailSub

如何重命名结果？

Answer 1

简而言之，使用IF

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