Oracle 中列添加和不同行数的两张表合并

问题:

怎么把两张行数不同的表合并成一个表？

Sql 为：

select s.stagename sname,

sum(nworkhours) nworkhours,

sum(OVERHOURS) OVERHOURS,

sum(nworkhours+OVERHOURS)

from T_WorkDetails w,

t_stage s

where w.stageid=s.stageid and w.projectid='D0927380468F4A4EE04010AC0C051F15'

group by s.stagename

ORDER by s.stagename

显示为：

第二个SQL 为：

select sum(total) as temptal from (select s.stagename sname,

sum(nworkhours) nworkhours,

sum(OVERHOURS) OVERHOURS,

sum(nworkhours+OVERHOURS) total

from T_WorkDetails w,

t_stage s

where w.stageid=s.stageid and w.projectid='D0927380468F4A4EE04010AC0C051F15'

group by s.stagename

ORDER by s.stagename)

显示为：

想要显示的结果为：

核心思想：select * from (表A,表B)

总体的sql如下：

select * from (select s.stagename sname,

sum(nworkhours) nworkhours,

sum(OVERHOURS) OVERHOURS,

sum(nworkhours+OVERHOURS)

from T_WorkDetails w,

t_stage s

where w.stageid=s.stageid and w.projectid='D0927380468F4A4EE04010AC0C051F15'

group by s.stagename

ORDER by s.stagename) t1,

(select sum(total) as temptal from (select s.stagename sname,

sum(nworkhours) nworkhours,

sum(OVERHOURS) OVERHOURS,

sum(nworkhours+OVERHOURS) total

from T_WorkDetails w,

t_stage s

where w.stageid=s.stageid and w.projectid='D0927380468F4A4EE04010AC0C051F15'

group by s.stagename

ORDER by s.stagename)t2)

注意：行数少的那一张表会自动补齐行数和行数多的那一张表对应