Question

求一sql语句 如图

mysql的

Answer 1

select cname,
sum(case when year(senddate)=2005 then totalpay else 0 end) as 2005,
sum(case when year(senddate)=2006 then totalpay else 0 end) as 2006
from pay group by cname
如果你senddate不是datetime类型的话year(senddate)=2005就要改成
left(senddate,4)='2005'

Answer 2

基于oracle:
select p.Cname,(select sum(nvl(TotalPay,0)) from pay where Cname=p.Cname and to_char(SendDate,'yyyy')='2005') as "2005",
(select sum(nvl(TotalPay,0)) from pay where Cname=p.Cname and to_char(SendDate,'yyyy')='2006') as "2006"
from Pay p
group by p.Cname

Answer 3

去百度行转列，你这个是典型的行转列

Answer 4

没有图啊