mysql 结果集合切换

结果集A:


转换成为结果集B:



mysql中实现例如以下:

SELECT 
		a.biz_date,
		CASE  WHEN a.`event` = 'downClick' THEN a.uv END AS  downClick,
		CASE  WHEN a.`event` = 'successClick' THEN a.uv END AS  successClick,
		CASE  WHEN a.`event` = 'installSuccess' THEN a.uv END AS  installSuccess
from a


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原文地址：https://www.cnblogs.com/mengfanrong/p/5185054.html