Oracle SQL Sum缺少右括号

Question

我有一个适用于MySQL的Oracle SQL，但是当我运行On Oracle时，我得到了“缺少正确的括号”。

我把它放在了sqlfiddle上

Answer 1

Oracle没有使用CASE或类似MySQL的简写方法。 因此，您必须在sum使用CASE ：

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;

请参阅SQL Fiddle with Demo