sqlite中具有复杂子查询的sql联合查询

我需要合并两个复杂子查询的结果。我有以下在sqlite中工作的查询

select * from (select 
               objectid from osm where tag = 'b' 
                     union 
               select 
               objectid from osm where tag = 'a');

我想将其修改如下（简化）：

这在sqlite中无效。所以我想做的是

select * from 
    (select objectid from osm where tag = 'b' limit 10) as b, 
    (select objectid from osm where tag = 'a' limit 10) as a, 
    osm
where 
    osm.objectid in (a union b);

但这同样是无效的。我知道我能做到

 osm.objectid in a OR osm.objectid in b;

---

但由于一些技术原因，我不能使用或。没有OR有什么方法可以做到这一点吗？

我认为有一个技巧可以让你随心所欲：

select *
from osm
where objectid in (select objectid from osm where tab = 'b' limit 10) or
      objectid in (select objectid from osm where tab = 'b' limit 10);

---

限制适用于整个查询，因此您必须使用单独的子查询层才能联合有限的查询：

select * from
  (select * from (select objectid from osm where tag = 'b' limit 10)
   union 
   select * from (select objectid from osm where tag = 'a' limit 10));

select * from
  (select * from (select objectid from osm where tag = 'b' limit 10)
   union 
   select * from (select objectid from osm where tag = 'a' limit 10));