mysql 中 select中 用case

將 countertype 整數類型轉成字符串類型

SELECT counterType, CASE counterType
WHEN 1 THEN 'CTP'
WHEN 2 THEN 'NULL'
WHEN 3 THEN '飛鼠'
WHEN 4 THEN '飛鼠 FIX'
WHEN 5 THEN 'CTP FIX'
WHEN 6 THEN 'QuantHub'
ELSE 'default'
END AS counterName
FROM urls