mysql case when * else end

分条件计算总数

SELECT  
   -- SUM(case when TransactionType='账户支出' then AmoutPrice else 0 END) as am,
   -- SUM(case when TransactionType='在线支出' then OnlinePrice else 0 END) as om ,
   -- SUM(case when TransactionType='账户+在线' then price else 0 END) as aom ,
   -- SUM(case when PayPlatform=100 then AmoutPrice else 0 END) as aaom ,
   SUM(case when PayPlatform=1 then OnlinePrice else 0 END) as pam,
   SUM(case when PayPlatform=2 then OnlinePrice else 0 END) as wom ,   
   SUM(case when Type='购买版权' then price else 0 END) as bm,
   SUM(case when Type='PVMode' then price else 0 END) as sm ,
   SUM(Price)as allm


from us_c c INNER JOIN us_s u on c.UserId=u.Id 
where u.UserState<>2 AND c.AddTime>'2017-5-5' and c.AddTime<'2017-8-18' ORDER BY c.AddTime DESC;