select case
when 1 = 5 then
'1等于1'
when 1 = 2 then
'1等于2啦'
when 1 = 3 then
'1=3'
else
case
when 11 = 12 then
'aaa'
else
'bbb'
end
end
from dual;
when 1 = 5 then
'1等于1'
when 1 = 2 then
'1等于2啦'
when 1 = 3 then
'1=3'
else
case
when 11 = 12 then
'aaa'
else
'bbb'
end
end
from dual;