选择Postgres中所有数组中存在的值

Question

我有一些表ignore与col ignored_entry_ids包含整数的数组。例如：

id  ignored_entry_ids 
1  {1,4,6} 
2  {6,8,11} 
3  {5,6,7} 

如何选择数字，与阵列的每一行中是否存在？ （在examle 6）

Answer 1

如果您的号码是唯一的内部数组，你可以做这样的事情，不认为它可以在不unnest

with cte as (
    select id, unnest(ignored_entry_ids) as arr 
    from ign 
) 
select arr 
from cte 
group by arr 
having count(*) = (select count(*) from ign) 

sql fiddle demo

进行，如果号码不独特，加distinct：

with cte as (
    select distinct id, unnest(ignored_entry_ids) as arr 
    from ign 
) 
select arr 
from cte 
group by arr 
having count(*) = (select count(*) from ign)