在MySql中生成伪列

Question

我有一个包含多个作业和多个部门的表，我希望以这样的方式处理数据，以便它能够提供部门明智和工作明智的薪资信息。我怎样才能做到这一点？只能使用select和case还是类似来实现？

Answer 1

select deptno, 
     sum(case when job = 'Founder' then salary else 0 end) as Founder, 
     sum(case when job = 'Cofounder' then salary else 0 end) as Cofounder, 
     sum(case when job = 'Sales' then salary else 0 end) as Sales, 
     sum(case when job = 'Marketing' then salary else 0 end) as Marketing, 
     sum(case when job = 'Janitor' then salary else 0 end) as Janitor 
from your_table 
group by deptno