从一个或几个table中获取数据插入到另一个table中

Table target:

-----------------------------------------------

ID char(32) PK

description varchar(100) null

value var not null

update_time date not null

Table sourceA

----------------------------------------------

sourceID char(32) PK

flag char(1) not null

Table sourceB

----------------------------------------------

sourceID char(32) PK

value varchar(1) not null

insert into target(

ID,

description,

value,

update_time

)

select

s1.sourceID,

case when s1.flat = 'Y' then 'active'

when s1.flat = 'N' then 'deactive'

end,

s2.value,

current_timestamp

from sourceA s1, sourceB s2;