Oracle SQL Sum缺少右括号

Question

我有一个适用于MySQL的Oracle SQL，但在Oracle上运行时，我得到了“缺少的右括号”。

我把它放在sqlfiddle

Answer 1

Oracle没有使用CASE或者像MySQL的简写方式。因此，你将不得不使用一个CASE内您sum：

select p.id, p.name, 
    t.id as toyid, 
    t.name as toyname 
from person p 
inner join toys t on p.id = t.person_id 
inner join 
(
    select person_id 
    from toys 
    group by person_id 
    having sum(case when name = 'hat' then 1 else 0 end) > 0 and 
    sum(case when name = 'doll' then 1 else 0 end) > 0 
) t2 
    on p.id = t2.person_id; 

见SQL Fiddle with Demo